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Question

Which one will replace the question mark ?

Which One Will Replace The Question Mark ?

Options:
A .  64
B .  144
C .  169
D .  25
Answer: Option A
The numbers are squared in ascending order
In first circle,
(3)^2 = 9
(4)^2 = 16
(5)^2 = 25
(6)^2 = 36.
In second circle,
(4)^2 = 16
(5)^2 = 25
(6)^2 = 36
(7)^2 = 49.
In third circle,
(6)^2 = 36
(7)^2 = 49
(8)^2 = 64
(9)^2 = 81.

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