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प्रश्न
Solve each of the following Cryptarithm:
A B
+3 7
9 A
बेरीज
उत्तर
Two possibilities of A are:
\[(i)\text{ If }B + 7 \leq 9, A = 6\]
\[\text{ But clearly, if }A = 6, B + 7 \geq 9;\text{ it is impossible }\]
\[(ii)\text{ If }B + 7 \geq 9, A = 5\text{ and }B + 7 = 5 \]
\[\text{ Clearly, }B = 8\]
\[ \therefore A = 5, B = 8\]
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