Question

How many six digit numbers are there in which sum of the digits is even?

Answer 1

Answer:

450000

Step-by-step explanation:

100019= 11 = odd—→ Again For units digit 0 to 9 ( ten numbers) we got 5 even numbers. So, for 900000 numbers from 100000 to 999999, 900000/2 = 450000 will be numbers are even numbers.

Answer 2

The total six digits numbers their sum is even = 4,50,000

Step-by-step explanation:

The smallest six digit numbers = 1,00,000 and

The greatest six digit numbers = 9,99,999

To find, the total six digits numbers their sum as even = ?

The total number of six digits numbers = The greatest six digit number - The smallest six digit numbers

= 9,99,999 - 1,00,000

= 8,99,999

The total six digits numbers their sum as even = $\dfrac{8,99,999+1}{2}$

= 4,50,000

Thus, The total six digits numbers their sum is even = 4,50,000