First slide

Permutations

Question

The number of 10 digit numbers that can be written by using the digits 0 and 1 is

Moderate

A

$^{10} C_{2} +^{9} C_{2}$
B

$2^{9}$
C

$2^{10} - 2$
D

$10!$

Solution

For each place we have two choices: either use $0$ or use $1 .$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App