Find the missing number, if a certain rule is followed either row-wise or column-wise.
14 11 2 39
15 12 3 57
16 13 4
?
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In the first column, we can see that the 4th, i.e the last entry can be calculated using first three entries as 18×(12÷3)=72.
This also applies to the 3rd column, where 32×(16÷4)=128.
So, the rule is " 4th entry = (1st entry) × (2nd entry ÷ 3rd entry) ".
Applying this rule in the 2nd column, we can find the missing number.
Suppose the missing number is X. Then, according to the rule
24×(14÷X)=112.
Solving it we can find X.
Thus, X=(24×14)÷112=336÷112=3.
So, the value of X is 3.
So, the correct option is B.
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