Question 6
Select the number that can replace the question mark (?) in the following series.
4, 25, 121, ? , 529, 961
Solution
The series follows as pattern,
$$(2)^2$$ = 4
$$(5)^2$$ = 25
$$(11)^2$$ = 121
$$(17)^2$$ = 289
$$(23)^2$$ = 529
$$(29)^2$$ = 961
$$\therefore$$ The correct answer is option B.
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