Question

if p,q,rand s are in A.P. then r-q is
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Answer 1

Step-by-step explanation:

Given,

p,q,r,s are in A.P.

D= q - p= r- q = s - r

r - q= q - p

2q =r+p

r - q= s-r

2r = r+ s

2r-2q = r+p-r-s

2(r - q)= p-s

r-q = ½(p - s)