Study the given pattern carefully and select the number that can replace the question mark (?) in it.
The logic here is
Along the columns
15$$^2$$ - 8$$^2$$ = 225 - 64 = 161
18$$^2$$ - 9$$^2$$ = 324 - 81 = 243
The difference of squares of first two numbers is equal to the third number along the columns.
Let the missing number = a
Similarly,
a$$^2$$ - 12$$^2$$ = 432
$$\Rightarrow$$Â a$$^2$$ - 144 = 432
$$\Rightarrow$$ Â a$$^2$$ = 576
$$\Rightarrow$$Â a = 24
$$\therefore\ $$The missing number = 24
Hence, the correct answer is Option B
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