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Question

In the following multiplication, each of the different letter denotes a different integer. Each letter stands for the same integer through out. If B stands for 6 and E stands for 8, then what is the difference between F and D ?
ABC
×DE
________________
ACFB
EAGO
________________
FHFB

A
2
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B
4
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C
6
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D
8
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Solution

The correct option is C 4
Given that B=6 and E=8
A6C
×D8
________________
ACF6
8AGO
________________
FHF6
________________
As at the Thousand's place A+8=F, there is no carry over, thus the value of A can either be 0 or 1, but 0 will make it a 3-digit number. Hence, the value of A=1 and thus that of F=9. Also, in the first multiplication, E×C=B, i.e., 8×C=6, So, C can either be 2 or 7. By hit and trial, we find that C=2. Therefore,
162
×D8
________________
1296
+81GO
________________
9H96
________________
As 9+G=9, therefore, G should be 0 which can be obtained when D=5, thus the difference between D & F is FD=95=4.

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