Question

how many 3 digit number which are multiples of 7​

Answer 1

Answer:

128.

Step-by-step explanation:

Largest 3-digit number = 999

When 999 is divided by 7, the quotient will be 142 and the remainder will be 5.

So, there are 142 multiples of 7 from 1 to 999.

Smallest 3-digit number = 100.

When 99 is divided by 7, the quotient will be 14 and the remainder will be 2.

So there are 14 multiples of 7 from 1-100.

To get no.of 3-digit multiples of 7,

subtract no.of 2-digit multiples from no.of 3-digit multiples.

=> 142 - 14

=> 128.