CBSE BOARD X, asked by Rocknain9535, 9 months ago

The first term of an Ap is 5and the last term is 45if the sum of all the terms is 400,the number of term is

Answers

Answered by bhaleraosiddhi9447

0

Answer:

there are 6 terms

Explanation:

sn=n/2×t1+t2

400=n/2×5+45

400=n/2×50

400=25n

400/25=n

n=6

Answered by satveer2410a

2

There are two methods

I hope it will help u

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