The number of ordered pairs (r,k) for which 6.35Cr=(k2−3).36Cr+1, where k is an integer is :
A positive integer a is written as a a = 3q + r and a = 4k + r ,where q,k,r, are whole numbers. choose the possibilites of q and k ? (A) q =4 ; k = 6 (b) q =3; k = 4 (c) q = 6; k = 8 (d) q = 8; k = 6