CAT Exam

The total number of prime factors of (402)^7 is

Read Solution (Total 3)

8*8*8=512=no of factors
10 years agoHelpfull: Yes(1) No(0)

402=2*3*67
hence 3...
10 years agoHelpfull: Yes(1) No(0)
(402)^7 =2^7 * 3^7 * (67)^7
=>total no of factors=(7+1)(7+1)(7+1)=512
10 years agoHelpfull: Yes(0) No(1)

CAT Other Question

In a lucky draw, the box contains prizes in 5 coupons out of a total of 9 coupons in the box. What is the probability that the first coupon drawn is a prize? 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?