Math, asked by umair09877, 11 months ago

find sum of ten terms of ap whose last termis 28 is 148 find first term and common difference

Answers

Answered by kbwani

1

Answer:

Sn=n/2(t1+tn)

148=10/2(t1+28)

148=5(t1+28)

148/5=t1+28

29.6-28=to

1.6 is the first term

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