Question : Directions: In the following question, select the related number from the given alternatives.
7 : 77 :: ? : ?
Option 1: 6 : 24
Option 2: 8 : 64
Option 3: 11 : 143
Option 4: 3 : 81
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Correct Answer: 11 : 143
Solution :
Given:
7 : 77 :: ? : ?
7 : 77→On multiplying 7 by the next prime number 11, we get 77.
Let's check each option –
First option:
6 : 24; 6 is not a prime number.
Second option:
8 : 64; 8 is not a prime number.
Third option:
11 : 143; On multiplying 11 by the next prime number 13, we get 143.
Fourth option:
3 : 81; On multiplying 3 by the next prime number 5, we get 15.
Hence, the third option is correct.
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