Math, asked by sanchitar2006, 7 months ago

if the first term of AP is 8 and 12th term is 63 then the sum of 12 term of an AP is ___________

Answers

Answered by mautushibanerjee123

1

Answer:

426

Step-by-step explanation:

a=8,d= 5 so S12=6(2*8+11*5)

S12=6(16+55)

S12=426

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