12 members were present at a board meeting. Each member shook hands with all of other members before and after the meeting. How many handshakes were there?
0/10
0
0
Save Progress
Show Timer
Qn #2013
00:00
Qn #1566
Qn #1286
From a group of 7 men and 6 women, a committee of 5 persons with more males than females is to be formed. In how many ways can this be done?
Qn #1139
How many 4 - digit numbers that can be formed from the digits 2, 3, 5, 6, 7 and 9, which are divisible by 5 and none of the digits is repeated?
Qn #1067
In a chess tournament, n men and 2 women players participated. Each player plays 2 games against every other player. Also, the total number of games played by the men among themselves exceeded by 66 the number of games that the men played against the women. Then the total number of players in the tournament is
Qn #557
A committee of 5 is to be chosen from a group of 9 people. The probability that a certain married couple will either serve together or not at all is
Qn #472
Number of three digit numbers that can be formed using 0, 1, 2, 3 and 5 where
these digits
are allowed to repeat any number of times, is equal to
Qn #467
The number of 3-digit integers that are multiple of 6 which can be formed by
using the
digits 1,2,3,4,5,6 without repetition is
Qn #104
How many signals can be made using 6 different colored flags when any number of them can be hoisted at a time?
Qn #102
In how many ways can 10 engineers and 4 doctors be seated at a round table if all the 4 doctors sit together?