The formula for finding the common difference of an AP is a) an=a+(n-1)d
b) Sn=n/2[2a+(n-1)d]
c) Sn=n(n-1)/2
d) d= To -Tq/p-q
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The formula for finding the common difference of an AP is a) an=a+(n-1)d
b) Sn=n/2[2a+(n-1)d]
c) Sn=n(n-1)/2
d) d= To -Tq/p-q
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