Question : Directions: The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) is/are followed in all the number pairs except one. Find that odd number pair.
Option 1: 7 : 46
Option 2: 13 : 166
Option 3: 9 : 78
Option 4: 48 : 144
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Correct Answer: 48 : 144
Solution :
Let's check the options –
First option:
7 : 46→(7)
2
– 3 = 49 – 3 = 46
Second option:
13 : 166→(13)
2
– 3 = 169 – 3 = 166
Third option:
9 : 78→(9)
2
– 3 = 81 – 3 = 78
Fourth option:
48 : 144→(48)
2
– 3 = 2304 – 3 = 2301 ≠ 144
So, only the fourth option is different from the other three options as the resultant is not equal to the second number. Hence, the fourth option is correct.
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