which of the following are APs? if they form an Arthematic progression find common difference d and three more terms -1/2,-1/2,-1/2,-1/2
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difference d = a2 - a1
=-1/2- -1/2
= 0
difference d = a3- a2
=-1/2- -1/2
= 0
it is an AP
a5 = a+ 4d
= -1/2+4(0)
= -1/2+0
=-1/2
a6= a+5d
= -1/2+5(0)
=-1/2+0
=-1/2
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