- 2200
- 2500
- 2300
- 2250
- D
-
Solution:
Formula : n(n+1)
Here n is equal to number of digits.
So we can find even nmbr UpTo 100 by dividing it with 2
100/2 =50
So, n=50
By putting the values in above formula
n(n+1)
50(50+1)
50(51)
2250