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Analogies and Classification · Question 31 of 66

Question 31

MediumOriginal question

16 : 5 :: 49 : ?

Options for question 31

Show the answer and explanation
CorrectNot quiteAnswer B

Correct answer: B

Explanation

  1. 16=4\sqrt{16} = 4 and 5=4+15 = 4 + 1: take the square root and add 1.

  2. 49+1=7+1=8\sqrt{49} + 1 = 7 + 1 = 8.

Worth noting

7 stops at the square root. 13 adds the digits of 49; for 16 that gives 7, not 5, so the digit sum does not fit the first pair.

Concept
Number analogy: square root plus one
Typical time
70 s
Your time
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The rule this testsNumber analogies
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