1.

A : If the coefficients of 5th, 6th , 7th terms of (1+x)^n are in A.P. then n=7 or 14. R : If the coefficients of rth, (r+1)th, (r+2)th terms of (1+x)^n are in A.P. then n^2-(4r+1) n+4r^2 = 2.

Answer»

Both A and R are true and R is the correct EXPLANATION of A
Both A and R true but R is not correct explanation of A
A is true but R is FALSE
A is false but R is true

Answer :A


Discussion

No Comment Found

Related InterviewSolutions