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Question

If BCD × CA = BCDA, BCDAA = C, B + C = D and B(C + C) = BB, then the value of DA × C would be equal to?
Assume that each letter in the given equations stands for an integer from 0 to 9.

A
30
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B
21
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C
20
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D
41
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Solution

The correct option is A 30

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