Question

out of five statistician and seven science laboratory technicians ,a committe consisting two statistician and three slt to be formed in how many ways can this be done if two particular statistician cannot be on the committee​

Answer 1

Explanation:

If one particular physicist must be on the committee, then you really only have 3-1=2 slots left for physicists. So you'll have 7-1 = 6 physicists left to pick from.

There are 5 nCr 2 = 10 ways to pick 2 mathematicians (from a pool of 5)