Question
Quantitative Aptitude Question on Number Systems
What is the minimum value of (a + b) such that 4a x 5b will be a multiple of 5000?
A
6
B
8
C
4
D
10
Answer
6
Explanation
Solution
The correct option is (A): 6.
5000 = 23 x 54
10000 = 24 x 54 = 42 x 54
So, the minimum value of a is 2 and b is 4.
Hence, the minimum value of (a + b) = 2 + 4 = 6