If a door fitter has to fit numbers 1 to 100 on doors how many 9s will he put up
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The answer is 20 because each number 9 in the number between 1 to 100 is 20 9s
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The door fitter has to fit 20 numbers.
Step-by-step explanation:
From 1 to 100, the 9's are given below:
9, 19, 29, 39, 49, 59, 69, 79, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98 and 99.
There are two numbers of nine in "99".
Thus, there are 20 numbers of nine from 1 to 100.
The door fitter can fit 20 numbers of nine from doors 1 to 100.
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