From the table along the columns,
2 - 2 = 0
7 - 9 = -2
Difference of first number and second number is equal to third number along the columns.
Let the missing number = a
Similarly along the second column,
4 - a = -6
$$\Rightarrow$$Â a = 10
$$\therefore\ $$The missing number = 10
Hence, the correct answer is Option B
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