What number should replace the question mark ? 4322 : 48 ; 4172 : 56 ; 7615 : ?
A
110
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B
210
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C
140
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D
180
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E
None of these
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Solution
The correct option is B 210 Given, 4322 : 48 ; 4172 : 56 ; 7615 : ?. Here, we have 4 x 3 X 2 x 2 = 48; 4 X 1 X 7 x 2 = 56. Similarly, 7 X 6 x 1 x 5 = 210. Hence, option (B) is the correct answer.