Question 15

Three of the following four number-pairs are alike in a certain way and one is different. Identify the different one.

Solution

$$37:75\ \longrightarrow\ \ 37\times\ 2+1=75,\ 29:59\longrightarrow\ \ 29\times\ 2+1=59,26:53\longrightarrow\ \ 26\times\ 2+1=53.$$

But,$$28:56\longrightarrow\ 28\times\ 2=56.$$

So, C is correct.

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