A. a positive integer

B. a negative integer

C. an even integer

D. an odd integer

If the sum of odd terms and the sum of even terms in the expansion of (x+a)^{n} are p and q respectively then p^{2}+q^{2}=

If the coefficients of (2r+1)^{th} term and (4r+5)^{th} term in the expansion of (1+x)^{10} are equal then r=

If the 3^{rd}, 4^{th} and 5^{th} terms of (x+a)^{n} are 720, 1080 and 810 respectively then (x,a,n)=

x^{n}-1 is divisible by x-k. Then the least +ve integral value of K is

The point which divides the line segment joining the points( 1,-1,2), (2,3,7) in the ratio -2:3 is