Math, asked by shubhammudgal, 1 year ago

An A.P. 11,20,29,......... has 24 terms.find the sum of its last 10 terms

Answers

Answered by manishjoshi3134gmail

0

a=11,d=9,n=10 and an=?
an=11+(10-1)*9
=11+9*9
=11+81
an=92 ans

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