1. If x,y and z are the pth, qth and rth terms of an AP and also of a GP then,xy-z. yz-x. zx-y is equal to(a) xyz(b) 0(c) 1(d) none of these2. Find the value of x in (-∏,∏) which satisfy the equation8(1+ |cos x| + cos^2 x + |cos^3 x| + ...) = 433. If a,b,c are in GP then the equation ax2 + bx + c =0 and dx2 + ex + f have a common root if d/a, e/b and f/c are in(a) AP(b) GP(c) HP(d) none

Dear Raghu,

 i am solving the first question  answer is 1

and this is a request that send questions seperately

as it is difficult to upload the solution of more than one question

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