Wipro Company Numerical Ability Probability

If six persons sit around a table, the probability that some specified three of them are always together is
a)1/20 b)3/10 c)1/5 d)4/5

Read Solution (Total 3)

There are six persons and three of them are grouped together. Since it is a circle, this can be done in 3! 3! ways.
Therefore, P = 3!3!/5!
= 3/10
10 years agoHelpfull: Yes(10) No(2)

4C3/6C3 = 1/5
13 years agoHelpfull: Yes(2) No(11)
3!*3!/5!=3/10
7 years agoHelpfull: Yes(2) No(1)

Wipro Other Question

If two cards are drawn at random from a well shuffled pack,the probability that both are king is
a)1/221 b)13/17 c)51/52 d)5/52 Arun speaks truth in 70% of cases while Bhargav speaks truth in 65% of cases.The probability that they will contradict each other on starting the same fact is
a)0.44 b)0.72 c)0.47 d)0.86