How many three digits numbers are divisible by7

1.	How many three digits numbers are divisible by7
Answer» The first three digit number divisible by 7 is 105. so First term of A.P i s105. common difference is 7. last three digit number divisible by 7 is 994994 = 105+( n-1)7(n-1)7 = 994-105(n-1)x7 = 889n-1 = 889/7 = 127n = 127+1= 128\xa0 128 three digit no are divisible by 7 960

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