Question : Directions: Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is related to the fifth number.
15 : 125 :: 27 : ? :: 36 : 1728
Option 1: 689
Option 2: 749
Option 3: 790
Option 4: 729
Correct Answer: 729
Solution :
Given:
15 : 125 :: 27 : ? :: 36 : 1728
Like, 15 : 125→(15 ÷ 3)
3
= (5)
3
= 125
And, 36 : 1728→(36 ÷ 3)
3
= (12)
3
= 1728
Similarly, for 27 : ?→(27 ÷ 3)
3
= (9)
3
= 729
So, 729 is related to 27 in the same way as the second number is related to the first number and the sixth number is related to the fifth number. Hence, the fourth option is correct.
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