Logical Problems

Logical Reasoning

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Qn #1878

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Five houses lettered A, B, C, D and E are built in a row next to each other. The houses are lined up in the order A, B, C, D and E. Each of the five houses have coloured roofs and chimneys. The roof and chimney of each house must be painted as follows:

The roof must be painted either green, red, or yellow.

The chimney must be painted either white, black, or red.

No house may have the same colour chimney as the colour of roof.

No house may use any of the same colours that the every next house uses.

House E has a green roof.

House B has a red roof and a black chimney.
Which possible combinations of roof & chimney can a house have?
i.A red roof & a black chimney.

ii.A yellow roof & a red chimney.

ii.A yellow roof & a black chimney.

Qn #1877

Five houses lettered A, B, C, D and E are built in a row next to each other. The houses are lined up in the order A, B, C, D and E. Each of the five houses have coloured roofs and chimneys. The roof and chimney of each house must be painted as follows:

The roof must be painted either green, red, or yellow.

The chimney must be painted either white, black, or red.

No house may have the same colour chimney as the colour of roof.

No house may use any of the same colours that the every next house uses.

House E has a green roof.

House B has a red roof and a black chimney.
Which statement if false?

Qn #1876

Five houses lettered A, B, C, D and E are built in a row next to each other. The houses are lined up in the order A, B, C, D and E. Each of the five houses have coloured roofs and chimneys. The roof and chimney of each house must be painted as follows:

The roof must be painted either green, red, or yellow.

The chimney must be painted either white, black, or red.

No house may have the same colour chimney as the colour of roof.

No house may use any of the same colours that the every next house uses.

House E has a green roof.

House B has a red roof and a black chimney.
Which of the following is true?

Qn #1875

Five houses lettered A, B, C, D and E are built in a row next to each other. The houses are lined up in the order A, B, C, D and E. Each of the five houses have coloured roofs and chimneys. The roof and chimney of each house must be painted as follows:

The roof must be painted either green, red, or yellow.

The chimney must be painted either white, black, or red.

No house may have the same colour chimney as the colour of roof.

No house may use any of the same colours that the every next house uses.

House E has a green roof.

House B has a red roof and a black chimney.
If house C has a yellow roof, which one of the following is true?

Qn #1662

From the information given below: A * B means A and B are of the same age, A – B means B is younger than A. A + B means A is younger than B. What does Sachin * Mohan – Ravi mean?

Qn #1657

In a cricket season, India defeated Australia twice. West Indies defeated India twice. Australia defeated West Indies twice. India defeated New Zealand twice and West Indies defeated New Zealand twice. Which country has lost most number of times?

Qn #1655

Which of the following statements would help to logically order the persons according to their heights?

Qn #1652

Ana is a girl and has the same number of brothers as sisters. Andrew is a boy and has twice as many sisters as brothers. Ana and Andrew are the children of Emma. How many children does Emma have?

Qn #1633

There are four brothers Alan, Bob, Carl and Dave. Dave is two years older than Bob. Bob is one year younger than Carl. Alan, who is 34, is two years younger than Carl. Who is the oldest?

Qn #1630

What is/was Ajay's grandfather's occupation?

Qn #1629

What is the profession of Rakesh's wife?

Qn #1628

Which of the following is definitely a couple?

Qn #1471

If road E is between B and C, then the distance between A and D is

Qn #1469

If K is parallel to I, K is 1/2 km South of J and 1 km North of G, then which of the following two roads would be 1/2 km apart?

Qn #1405

If ÷ means addition, – means division, × means subtraction and + means multiplication, then the value of $\frac{(36 \times 4)-(8 \times 4)}{4+8 \times 2 +16\div 1}$

Qn #1388

A drawer contains 10 black and 10 brown socks which are all mixed up. What is the smallest number of socks to be taken from the drawer to decide without seeing them, to be sure that there is atleast one pair of socks of the same colour?

Qn #1376

Three ladies X, Y and Z marry three men A, B and C. X is married to A, Y is not married to an engineer. Z is not married to a doctor, C is not a doctor and A is a lawyer. Then which of the following statements is correct?

Qn #1329

Which of the following cannot be included in a team of size 6?

Qn #1328

What would be the size of the largest possible team?

Qn #1327

What could be the maximum size of the team that includes G?

Qn #1149

Each family in a locality has at most two adults, and no family has fewer than 3 children. Considering all the families together, there are more adults than boys, more boys than girls, and more girls than families. Then the minimum possible number of families in the locality is

Qn #1144

Each of A, B and C is a different digit among 1 to 9. How many different values of the sum of A, B and C are possible, if ABA X AA=ACCA ?

Qn #1138

A team must be selected from ten probables – A, B, C, D, E, F, G, H, I and J. Of these, A, C, E and J are forwards, B, G and H are point guards and D, F and I are defenders. The team must have at least one forward, one point guard and one defender. If the team includes J, it must also include F. The team must include E or B, but not both. If the team includes G, it must also include F. The team must include exactly one among C, G and I. C and F cannot be members of the same team.D and H cannot be members of the same team. The team must include both A and D or neither of them. There is no restriction on the number of members in the team. What could be the maximum size of the team that includes G?

Qn #937

Of the nine individuals, the largest number that can serve together on committee K3 is:

Qn #936

In case committee K2 is served by T and Z only, how many of the nine individuals should serve on committee K3?

Qn #932

Who are the members of team X?

Qn #924

Four friends A, B, C and D need to cross a bridge in the night. A maximum of 2 people can cross at a time. They have only one lamp. A takes one minute to cross the bridge. B takes 2 minutes, C takes 8 minutes and D takes 11 minutes to cross the bridge respectively. A pair must walk together at the speed of the person who walks slowly. What is the minimum time required to cross the bridge by all the four people?

Qn #679

Thirty-six vehicles are parked in a parking lot in a single row. After the first car, there is one scooter. After the second car, there are two scooters. After the third car, there are three scooters and so on. Work out the number of scooters in the second half row.

Qn #620

Consider an arbitrary number system with independent digits as 0,1 and A. If we generate first few numbers in sequence as 00, 01, 0A, 10, 11, 1A and if this process is continued to generate the numbers, then the position of 10A is ________

Qn #592

A, B, C, D and E are five different integers. When written in the ascending order of values, the difference between any two adjacent integers is 8. D is the greatest and A the least. B is greater than E but less than C. The sum of the integer is equal to E.

The sum of the integers is

Qn #590

A, B, C, D and E are five different integers. When written in the ascending order of values, the difference between any two adjacent integers is 8. D is the greatest and A the least. B is greater than E but less than C. The sum of the integer is equal to E.

The greatest number has the value

Qn #588

A, B, C, D and E are five different integers. When written in the ascending order of values, the difference between any two adjacent integers is 8. D is the greatest and A the least. B is greater than E but less than C. The sum of the integer is equal to E.

The sum of A and B is

Qn #586

A, B, C, D and E are five different integers. When written in the ascending order of values, the difference between any two adjacent integers is 8. D is the greatest and A the least. B is greater than E but less than C. The sum of the integer is equal to E.

The value of A is the least

Qn #580

Directions: A, B, C, D, E, F and G are travelling in three different vehicles. There are at least two passengers in each vehicle-Swift, Creta, Nexon, and only one of them is a male. There are two engineers, two doctors and three teachers among them.

C is a lady doctor and she does not travel with the pair of sisters A and F.
B, a male engineer, travels with only G, a teacher in a Swift.
D is a male doctor.
Two persons belonging to the same profession do not travel in the same vehicle.
A is not an engineer and travels in a Creta.
The pair of sisters A and F travel in the same vehicle

What is F’s profession?

Qn #560

Four friends, Aditi, Bharat, Chandan, and Deepika, went to a restaurant for dinner. Each of them ordered a different dish from the menu: pizza, pasta, burger, and salad. Additionally, each friend ordered a different drink: cola, lemonade, orange juice, and water. Based on the following clues, determine the combination of friend, dish, and drink:
Aditi didn't order pizza or cola.
Bharat ordered salad but not lemonade.
Chandan ordered pasta.
Deepika didn't order burger or orange juice.
Aditi ordered orange juice.

Who ordered the burger, and what drink did they order?

Qn #554

In a tournament, how many teams participated. All teams in the tournament have 5 to 15 players. If a team has more than 10 players, then they have reversible t-shirts?

Qn #546

You are on an island with two tribes. One tribe always tells the truth, and the other tribe always lies. You meet three individuals from the island A, B and C. Each individual belongs to one of the tribes. You ask each of them the same question “Is B a truthteller?” “Is B a truthteller?”

A says, “Yes B is a truth-teller.”

B says, “No, I am not a truth-teller”

C. Says, “B is a liar”

Given that each individual is either a truth-teller or a liar, who is telling the truth?

Qn #505

A, B, C, D, E, F and G are travelling in three different vehicles: Swift, Creta, and Nexon. There are at least two passengers in each vehicle. Among them, only two are male. There are two engineers, two doctors and three teachers.

C is a lady doctor and she does not travel with A and F, who are sisters.
B, a male engineer, travels with only G, a teacher, in a Swift.
D is a male doctor.
Two persons belonging to the same profession do not travel in the same vehicle.
A is not an engineer and travels in a Creta.
The pair of sisters A and F travels in the same vehicle

What is the profession of F?

Qn #500

A remote island has a unique social structure. Individuals are either 'Truth-tellers' (who always speak the truth) or 'Tricksters' (who always lie). You encounter three inhabitants: X, Y, and Z.

X says: "Y is a Trickster."

Y says: "Exactly one of us is a Truth-teller."

What can you definitively conclude about Z?

Qn #491

In a remote research outpost, five scientists (Dr. Anand, Dr. Beena, Dr. Chirag, Dr. Dinesh, and Dr. Elango) are studying a rare phenomenon. They communicate through a secure, text-based system. Over the course of an hour, the following exchanges occur:

Dr. Anand sends a message to Dr. Beena and Dr. Chirag.
Dr. Beena replies only to Dr. Anand.
Dr. Anand sends a reminder message to who did not reply.
Dr. Chirag sends a message to Dr. Dinesh and Dr. Elango.
While replying to Dr. Chirag, Dr. Dinesh accidentally sends a "Reply All"
Dr. Elango, having received Dr. Chirag's message, sends a message to Dr. Beena.

At the end of this hour, who has received the most messages directly from other scientists within the group? (Consider only messages sent within the described hour and only between the five scientists mentioned).

Qn #295

Who scored the second lowest mark?

Qn #294

Who is the most likely to have scored 82% marks?

Qn #292

Six plays A, B, C, D, E and F are staged on six days of the week starting from Monday to Saturday. Play C is staged on Tuesday. Plays A, F and B are staged one after other in the same order. Play D is not staged on Monday or Wednesday. Which play is staged on Thursday?

Qn #215

Which ball is the heaviest?

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Qn #209

What is indicated below? The first of October A fifth of scotch The tail of a rattlesnake The centre of a hexagon The end of autumn

Qn #208

To lever up the large, heavy weight with the least effort, by pushing down in the direction of the arrow, at which point under the beam should the block be placed?

Question 46 image

Qn #160

Ten new television shows appeared during the month of September. Five of the shows were sitcoms, three were hourlong dramas, and two were newsmagazine shows. By January, only seven of these new shows were still on the air. Five of the shows that remained were sitcoms.

Qn #150

Answer the questions on the basis of the following information:

Question 48 image

Qn #129

If both K and N are reduced, which of the following is a pair of areas neither of which could be reduced?

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Qn #75

Who has taken the course of Biology?

Qn #74

Who among the following have Maths as the core course?

Qn #73

Which of the following has the same course set as that of F?

Qn #72

What is the core course of C?

Qn #71

Who is the female student?

Qn #62

Consider the following statements: (i) Hari weighs less than Guru. (ii) Hari weighs more than Mano. (iii) Mano weighs the least. Which of the following is correct?

Qn #43

The square boxes in the figures given are to be painted with different colours such that no two adjacent boxes (even diagonally) have the same colour. How many minimum colours do you need in each case?

Question 56 image

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