+0  
 
0
61
1
avatar

The product of all digits of positive integer M is 105. How many such Ms are there with four digits?

 May 28, 2021

Best Answer 

 #1
avatar
+1

The prime factorization of 105 is: 3 * 5 * 7. Therefore, the 4 digit number must have the digits: 1,3,5, and 7. There are 4! ways to rearrange these numbers, so the answer is 4! = 24.

 May 28, 2021
 #1
avatar
+1
Best Answer

The prime factorization of 105 is: 3 * 5 * 7. Therefore, the 4 digit number must have the digits: 1,3,5, and 7. There are 4! ways to rearrange these numbers, so the answer is 4! = 24.

Guest May 28, 2021

61 Online Users

avatar