From the table along the columns,
10 + 2 = 12
7 + 2 = 9
Sum of first number and second number is equal to third number along the columns.
Let the missing number = a
Similarly along the third column,
4 + 10 = a
$$\Rightarrow$$Â a = 14
$$\therefore\ $$The missing number = 14
Hence, the correct answer is Option B
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