Question

the number of numbers that are divisible by 9 between 1 and 1000 is​

Answer 1

Answer:

9,18,21..........................,999

here, a=9

d=9

an=999

so, an=a+(n-1)d

999=9+(n-1)9

999=9+9n-9

999=9n

n=111

so, 111 numbers are divisible by 9 between 1 and 1000.

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