Math, asked by vaishnavdiya0875, 23 days ago

For an A.P., If t1= 1 and tn= 149 then find Sn.

Answers

Answered by happysunshine210

6

Step-by-step explanation:

a1 = 1

an= 149= l

Sn= n/2 (a+l)

= n/2 (1+149)

= n× 150/2

= 76n

Hope it helps you!

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