Question 21
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
Solution
The logic here is
Along the columns
11$$^2$$ - 4$$^3$$ = 121 - 64 = 57
12$$^2$$ - 5$$^3$$ = 144 - 125 = 19
The difference of square of first number and cube second number is equal to third number along the columns.
Similarly along third column,
The required number = 18$$^2$$ - 6$$^3$$ = 324 - 216 = 108
Hence, the correct answer is Option D
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