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find the sum of all multiples of 9 lying between 300 and 700

Posted by Mehul Kedia 4 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 4 years, 10 months ago

The multiples of 9 lying between 300 and 700 are 306, 315,………, 693.

This is an AP with a = 306, d = 9 and l = 693.

Suppose these are n terms in the AP. Then,

2Thank You

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