English, asked by deeepmota, 1 year ago

How many three digits are divisible by 7

Answers

Answered by durekhan123
2

The first three digit number which is divisible by 7 is 105 and last three digit number which is divisible by 7 is 994. This is an A.P. in which a = 105, d = 7 and l = 994. Let the number of terms be n . Then tn = 994.


deeepmota: wrong
durekhan123: sorry
Answered by gaurav2013c
39
a = 105

d = 7

L = 994

=> a + (n-1)d = 994

=> 105 + (n-1)d = 994

=> (n-1)( 7) = 889

=> n - 1 = 127

=> n = 128

There are 128 three digit numbers that are divisible by 7.
Similar questions