Math, asked by yojassaini119q, 10 months ago

find the sum of first 20 term of an ap in which 11th term is 5 and 13 term is 79

Answers

Answered by naskarsuman114

0

Step-by-step explanation:

5+2r=79

(or), 2r= 74

so, r = 37

now the sum of first 20 term is =19×37=703

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