7 : 77

Which of the following pair is similar to the above expression?

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  1. 9 : 95
  2. 13 : 91
  3. 11 :123
  4. 11 : 143

Answer (Detailed Solution Below)

Option 4 : 11 : 143
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Detailed Solution

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The logic followed here is:

Logic: Number × consecutive prime number.

For,  7 : 77.

⇒ 7 × 11 = 77

 Apply the same logic to each of the given options.

Option 1: 9 : 95

9 × 11 = 99, which is not equal to 95. Therefore, this option is incorrect.

Option 2: 13 : 91

13 × 17 = 221,  which is not equal to 91. Therefore, this option is correct. 

Option 3: 11 : 123

11 × 13 = 143, which is not equal to 123. Therefore, this option is incorrect.

Option 4: 11 : 143

11 × 13 = 143. Therefore, this option is also correct. 

 

Thus, the pair 11 : 143 is similar to 7 : 77.

Hence, the answer is "Option 4".

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