[npq=720" and "n],[" ind the value of "q]

Find the value of :- cosec720^@

If .^(n)P_(3)=720 , then find the value of .^(11)P_(n) .

5.If p+q=k and p-q=n then the value of q is

If .^(n)P_(r)=720 and .^(n)C_(r)=120 then find the value of r.

If .^(n)P_(r)=720 and .^(n)C_(r)=120 then find the value of r.

If nP_(r)=720nC_(r), then the value of r, is

If 2 log_(8) N = p , log_(2) 2 N = q , and q - p = 4 , then the value of N is

The 2^(nd), 3^(rd) and 4^(th) terms in the binomial expansion of (x+a)^(n) are 240, 720 and 1080 for a suitable value of x. Find x, a and n.