Question 50
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
Solution
The logic for the given pattern is
$$\left(9+1\right)\times 13=130$$
$$\left(14+1\right)\times 9=135$$
Let the required number be $$a$$
Similarly, $$\left(7+1\right)\times a=168$$
$$\Rightarrow$$ $$8a=168$$
$$\Rightarrow$$ $$a=21$$
$$\therefore\ $$Required number = 21
Hence, the correct answer is Option B
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