Question

83. If a,b,c,d are in A.P. then
a) a? - 362 +3c2-d? = 0
b) a² + 3b2 +3c2 + d2 = 0
c) a? +352 +302 –d? =0 d) None of these
of the series​

Answer 1

Answer:

d) option none of these

Answer 2

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