Question 29
Select the option in which the numbers are related in the same way as are the numbers of the following set.
(26, 63, 124)
Solution
$$26=27-1=3^3-1$$
$$63=64-1=4^3-1$$
$$124=125-1=5^3-1$$
All the numbers are in the form of $$n^3-1$$
Similarly,
$$63=64-1=4^3-1$$
$$124=125-1=5^3-1$$
$$215=216-1=6^3-1$$
$$\therefore\ $$(63, 124, 215) are related in the same way (26, 63, 124) related
Hence, the correct answer is Option A
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