Math, asked by carmelinesaldhana21, 1 year ago

First term of an ap is 10,000 and common difference is 2000 find sum of first 12th term

Answers

Answered by macmikhil
3
A=10000
d=2000
sum of 12 terms =Sn=
n \div 2(2a + (n - 1)d)
12 \div 2(2 \times 10000 + (12 - 1)2000
6(20000 + 22000)
6 \times 42000 = 256000
the sum of first 12 terms is 256000
thank you

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