How many 3 digit nos. Are divisible by 7?

1.	How many 3 digit nos. Are divisible by 7?
Answer» a=105d=7 l=994An=a+(n-1)d994=105 + ( n-1)7 (-105)889=(n-1)7 (÷7) 127=n-1 ( +1)128=nn=128There are 128 there digit numbers which are divisible by 7. a=105d=7An=994An=a+(n-1)d994=105+(n-1)7n=896

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