What should be the maximum value of B in the following equation 4A8 5B2 8C5 731 ........

Quantitative Aptitude (CDS) Simplification

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What should be the maximum value of B in the following equation?

4A8 - 5B2 + 8C5 = 731

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Explanation:

Unit’s digit: 8 + 5 – 2 = 11. Therefore, it gives carry to ten’s digit.
Ten’s digit: A + C – B + 1 = 3.
The maximum value that A and C can attain is 9.
Maximum value of A + C +1 = 9 + 9 + 1 = 19
So, B has to be 6 to get ten’s digit as 3.
Thus, B=6.