Question

Find the sum of all natural numbers which less than 1000 and both divisible by 5 and 7

Answer 1

First term divisible by 5 and 7 is 35 and next is 70 and this forms and A.P and here last term is 980. Now n=30 by formula applying sum formula you will get answer. HOPE IT HELPS YOU...... IF SO PLEASE MARK IT AS BRAINLIST☺☺

Answer 2

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