top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

The product of all digits of a 4 digit number is 630. How many such numbers can be made.

+2 votes
448 views

All the digits of the given number are different.

posted Dec 10, 2014 by anonymous

Share this puzzle
Facebook Share Button Twitter Share Button LinkedIn Share Button

3 Answers

+2 votes
 
Best answer

Ans: 48
1) Four digit number can be formed by using 3, 5, 6,7
Total numbers= 4! = 24

2)Four digit number can be formed by using 2, 5, 7,9
Total numbers= 4! = 24

So total four digit numbers = 24+24 = 48

answer Dec 12, 2014 by Swapnil Morankar
+1 vote

Answer: 48

possible 4 digit number: 5 2 7 9 => 4! = 24
6 5 7 3 => 4! = 24

answer Dec 22, 2014 by Shashi Kant
–1 vote

It should be 24.
9752
9725
9275
9257
9572
9527
.
.
.

!4
24

answer Dec 11, 2014 by Double S



Similar Puzzles
+1 vote

A four digit positive number having all non-zero distinct digits is such that the product of all the digits is least. If the difference of hundreds digit and tens digit is 1.
How many possibilities are there of such number?

0 votes

Using the digits 1 up to 9, two numbers must be made.
The product of these two numbers should be as large as possible.
All digits must be used exactly once.
Which are the requested two numbers?

...