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Question

Find the value of x and y respectively.
51x ×y 34 = 20

A
3,1
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B
3,3
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C
4,1
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D
5,3
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Solution

The correct option is B 3,3
Put x = 3 and y = 3 of LHS, we get
513 × 334 = 163 × 154 = 4 × 5 = 20

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