If you write all the numbers from 1 to 100 how many times will you have written the digit 1?

Answer 1

1-10 interval x 2
11-20 interval x 10
21-100 interval x 9
2+10+9= 21

Comments

22 is wrong answer...

It hs to be 21 only.

1-10 interval :  2
11-20 interval : 10
21-100 interval ; 9
2+10+9 = 21

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Thanks, you are right, miscounted...

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Ohhh No.

No need to thank.

Its ur grateness to accept & correct it