CAT Exam

There are 2 companies A and B.A have 4 workers P,Q,R,S and B have 5 workers K,L,M,N,O. A always have to take odd position.How many possibilities are there?

Read Solution (Total 1)

As total we have 9 workers, and A demands for the odd positions....

so total odd positions = 5 (1,3,5,7,9)
5c4= 5.
total posibilities = 5.
11 years agoHelpfull: Yes(0) No(0)

CAT Other Question

Shikhar has a bag with 2 balls, each of them can be black or white with equal probability. Now, he draws out a ball and it turns out to be black. After this event what is the probability that both balls are black? A company decides a new identity code for all its employees. The identity code would comprise of five letter initials that can be formed using the alphabets of English language such that the fifth letter is always a constant. How many such combinations are possible?
26^3 * 21^2
21^4 * 26
21^3 * 26^2
26^4 * 21