What is the probability of getting a 2 digit number in chits numbered from 1 to 100?

Given:

Chits numbered from 1 to 100.

To do:

We have to find the probability of getting a 2 digit number.

Solution:

Chits numbered from 1 to 100.

This implies,

The total number of possible outcomes $n=100$.

Two digit numbers from 1 to 100 are $10, 11, .........., 98, 99$.

Total number of favourable outcomes $=90$.

We know that,

Probability of an event $=\frac{Number\ of\ favourable\ outcomes}{Total\ number\ of\ possible\ outcomes}$

Therefore,

Probability that the chit bears a two digit number $=\frac{90}{100}$

$=\frac{9}{10}$

The probability of getting a 2 digit number in chits numbered from 1 to 100 is $\frac{9}{10}$.  

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Updated on: 10-Oct-2022

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