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How many 3 digit nos. Are …

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How many 3 digit nos. Are divisible by 7?

Posted by Cheshtha Sethi 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Sinchana Sheshadri 6 years, 11 months ago

a=105 d=7 l=994 An=a+(n-1)d 994=105 + ( n-1)7 (-105) 889=(n-1)7 (÷7) 127=n-1 ( +1) 128=n n=128 There are 128 there digit numbers which are divisible by 7.

0Thank You

Divyanshi Tongariya 6 years, 11 months ago

a=105 d=7 An=994 An=a+(n-1)d 994=105+(n-1)7 n=896

1Thank You

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CBSE > Class 10 > Mathematics