In the following question, there are two terms to the left of the sign :: which are related in some way. Obtain the same relationship between the term to the right of the sign :: and from one of the four alternatives given under it.
531:81::642:?
A
91
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B
111
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C
144
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D
196
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Solution
The correct option is D144 In the first group, 5+3+1=9. Now, 92=81 Similarly, in the second group, 6 + 4 + 2 = 12. Now, 122=144 Hence, option (C) is the correct answer.