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How many numbers of two digits are divisible by 7f all integers between 100 and 1000 which are divisible |
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Answer» A.P : 14, 21, 28,……,98 a=14 d=21–14=7 aₙ=98 By using, aₙ=a+(n-1)d 98=14+(n-1)7 98–14=(n-1)7 84÷7=n-1 12=n-1 n=12+1 n=13 There are 13 numbers divisible by 7. |
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