Question

if you wirte all numbers from 1 to 100 ,then how many times do you write 2?
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Answer 1

Answer:

There are 18 whole numbers from 1 to 100 that contain the digit 2.

Step-by-step explanation:

There are 18 whole numbers from 1 to 100 that contain the digit 2 exactly once. They are 2, 12, 20, 21, 23, 24, 25, 26, 27, 28, 29, 32, 42, 52, 62, 72, 82, and 92. Nine of these numbers have 2 in the units position, and nine have the digit 2 in the tens position.