Question

How many digits you need to write all 2-digit numbers?

Answer 1

Hey mate!!

Here's your answer

You need 90 numbers....From 1 to 99 there are 99 numbers, out of which there are 9 one digit numbers,i.e 1,2,3,4,5,6,7,8, and 9. If one digit numbers are subtracted from 99 we get 90 two digit numbers....

Hope it helped you....Mark me as brainliest.....

Answer 2

We need 180 digits to write all the 2-digit numbers.

Given,

Two-digit numbers.

To Find,

The number of digits used to write all 2-digit numbers.

Solution,
Firstly, we need to find out how many digits there are in the number system.

From 0 to 9. they all are single-digit numbers.

From 10 to 99. they all are two-digit numbers.

So, there are a total of 90 two-digit numbers in the number system.

Then,

If one number contains two digits,

So, 90 numbers will contain double the number of digits.

To find the number of digits in 90 numbers,

we have to multiply 90 by 2.

Number of digits = 90 × 2

= 180.

We need 180 digits to write all the 2-digit numbers.

#SPJ2