×

#### Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Click to Chat

1800-1023-196

+91-120-4616500

CART 0

• 0

MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
```
How many 4 digit number are there with no digit repeated? Please also explain why do we need to use multiplication principle. And what is multiplication principle?
How many 4 digit number are there with no digit repeated? Please also explain why do we need to use multiplication principle. And what is multiplication principle?

```
3 years ago

Arun
25768 Points
```							we know in a 4 digits number, thousand digit can’t be zero hence, for a thousndth place only 9 digits are allowed to be filled.hence, for a hundredth place only 9 digits (including zero & besides that digit that is already filled) are allowed to be filledhence, for a tenth place only 8 digits are allowed to be filledhence, for a unit place only 7 digits are allowed to be filled. thus total ways  = 9 * 9* 8 *7 = 4536 ways
```
3 years ago
Think You Can Provide A Better Answer ?

## Other Related Questions on Algebra

View all Questions »

### Course Features

• 731 Video Lectures
• Revision Notes
• Previous Year Papers
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Test paper with Video Solution

### Course Features

• 101 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions