Answers

2016-01-22T20:25:56+05:30
Numbers greater than 50 which when divided by7 leaves remainder 4 starts from 53 then take common difference be 7 and make an AP.
53,60,67,74,81,88,95
A=53 d= 7 and An th term =95
find n and then put the formula of Sn = n/2(A+An)
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  • CMG
  • Helping Hand
2016-01-22T22:42:30+05:30
53,60,67,75,.......95 he nth term is 95 common difference is 7 the first term is53 then Sn=n/2(2a+(n-1)d)
So sum of n terms=521
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