Question
What should be the maximum value of B in the following equation?
5A9 – 7B2 + 9C6 = 823
Answer: Option C
 - We may represent the given sum, as shown.
1 + A + C - B = 12
A + C - B = 11
Giving the maximum values to A and C, i.e.
A = 9 and C = 9, we get B = 7
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 - We may represent the given sum, as shown.
1 + A + C - B = 12
A + C - B = 11
Giving the maximum values to A and C, i.e.
A = 9 and C = 9, we get B = 7
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