+0  
 
0
47
1
avatar+29 

How many 10-digit numbers are there, such that the sum of the digits is divisible by 2?

 Apr 18, 2020
 #1
avatar
+1

[9,999,999,999 - 1,000,000,001] / 2 + 1 =4,500,000,000 such numbers

 Apr 18, 2020

16 Online Users