The correct option is B 1064 : 9 : : 81 : ? ⇒ (√(64) = 8) : (8's next number = 9) : : (√(81) = 9) : (9's next number) ⇒ 64: 9 : : 81 : 10 Missing ...

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Properties of Iota

64 : 9 : : 81...

Question

64 : 9 : : 81 : ?

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Solution

The correct option is B 10
64 : 9 : : 81 : ?
$\Rightarrow (\sqrt{64} = 8) : (8^{'} s n e x t n u m b e r = 9) : : (\sqrt{81} = 9) : (9^{'} s n e x t n u m b e r)$
$\Rightarrow 64 : 9 : : 81 : 10$
Missing number is $10$
$C$ is the answer

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