pls tell 6 numbers in ARETHEMATIC PROGRATION and juggest how to find
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take 3 as a1, 6 as a2 ,9 as a3
common difference is 3 , a2-a1=3
it is in A.P
the formula for sum of n terms is Sn=n/2 (2a+(n-1 )×d)
and another is an=a+n-1×d
common difference is 3 , a2-a1=3
it is in A.P
the formula for sum of n terms is Sn=n/2 (2a+(n-1 )×d)
and another is an=a+n-1×d
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