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) are followed in all the number pairs, EXCEPT one. Find that odd number pair.
Option 1: (15, 240)
Option 2: (13, 180)
Option 3: (11, 132)
Option 4: (16, 272)
Correct Answer: (13, 180)
Solution :
Let's check the options –
First option:
(15, 240); 15
2
+ 15 = 225 + 15 = 240
Second option:
(13, 180); 13
2
+ 13 = 169 + 13 = 182 ≠ 180
Third option:
(11, 132); 11
2
+ 11 = 121 + 11 = 132
Fourth option:
(16, 272); 16
2
+ 16 = 256 + 16 = 272
So, the second option is different from the other three options. Hence, the second option is correct.
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