How many three digit numbers are divisible by 87

Asked by admin @ 20/08/2021 in Math viewed by 309 People

How many 3 digits number are divisible by 87

Answered by admin @ 20/08/2021

Hello...

lowest 3 digit no. = 174 (87 × 2)

highest 3 digit no = 957 (87 × 11)

a= 174 , d = 87 and last term 957

We've to use last term formula

957 = 174+ ( n -1)×87

957= 174 + 87n - 87

957= 87 + 87n

957-87 = 87n

870 = 87n

n = 10th term

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