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The 25th term of an A.P is 173. Find the sum of the 7th and 15th term if the common difference is 7
4 years ago

Answers

oobleck
Just use your formulas.
a+24d = 173
d = 7
Now find a, and then
(a+6d)+(a+14d)
4 years ago
Joy
Thanks
4 years ago

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