A. (2,3,5)

B. (3,5,7)

C. (5,3,2)

D. (2,5,3)

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

The first three terms in the expansion of (1+x+x^{2})^{10} are

C_{0}+4.C_{1}+7.C_{2}+……(n+1) terms =

The number of terms which are free from radical signs in the expansion of (x^{1/5}+y^{1/10})^{55} is