find the number of times the digit 3 occurs in one's place in all natural numbers up to 100.
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I will show You 3 digit in 1 to 100
At Unit place: {3,13,23,33,43,53,63,73,83,93}=10At tenth place: {31,32,33,34,35,36,37,38,39} = 10
It means 3 comes in 1–100 = 20 times
At Unit place: {3,13,23,33,43,53,63,73,83,93}=10At tenth place: {31,32,33,34,35,36,37,38,39} = 10
It means 3 comes in 1–100 = 20 times
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