Question

Solution

Correct option is

                    

= number of ways of choosing n person out of n men and n women

= number of ways of choosing n person out of 2n persons

SIMILAR QUESTIONS

Q1

If ω ≠ 1, is nth root of unity, and  then value of x is

Q2

The remainder when  (24 times 5) is divided by 24 is

Q3

 divided by 7 is

Q4

If in the expansion of (a – 2b)n. the sum of 4th and 5th term is 0, then value of  is

Q5

The coefficient of t50 in (1 + t2)25 (1 + t25) (1 + t40) (1 + t45(1 + t47)……(1) is

 

Q6

 is a polynomial of degree

Q7

 is a polynomial of degree

Q9

If n > I then value of the expression is