The 1st and 2nd term of AP are (a-b) and (b-a) respectively . Then d=____
a)0
b)2a
c)-2a
d)2b-2a
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Answer:
d)2b-2a
Step-by-step explanation:
d= t2-t1
=a-b-(b-a)
= a-b-b+a
=2a-2b(change sign)
=2b-2a
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