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Question : Directions: Four number pairs have been given, out of which three are alike in some manner and one is different. Select a different one.
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

Option 1: 7 : 354

Option 2: 5 : 136

Option 3: 9 : 742

Option 4: 8 : 523


Team Careers360 10th Jan, 2024
Answer (1)
Team Careers360 24th Jan, 2024

Correct Answer: 9 : 742


Solution : Let's check the options –
First option: 7 : 354; 7 3 + 11 = 343 + 11 = 354
Second option: 5 : 136; 5 3 + 11 = 125 + 11 = 136
Third option: 9 : 742; 9 3 + 13 = 729 + 11 = 740 ≠ 742
Fourth option: 8 : 523; 8 3 + 11 = 512 + 11 = 523

So, the third option is different from the other three as here the difference between the cube of the first number and the second number is 13 instead of 11. Hence, the third option is correct.

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