Math, asked by saalikDON, 1 year ago

find the sum of all natural number between 400 and 600 which are divisible by 9

Answers

Answered by nilwarnjayraj

1

use formula 0f sn=n (n+1)÷100

nilwarnjayraj: but we find the sum then use formula for sn= n (n+1)÷100

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