Question : Directions: Three of the following four are alike in a certain way and thus form a group. Which is the one that does NOT belong to that group?
(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: 2 – 6
Option 2: 4 – 20
Option 3: 5 – 30
Option 4: 8 – 75
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Correct Answer: 8 – 75
Solution :
Let's check the options –
First option:
2 – 6
; 6 ÷ 2 = 3
Second option:
4 – 20
; 20 ÷ 4 = 5
Third option:
5 – 30
; 30 ÷ 5 = 6
Fourth option:
8 – 75
; 75 is not divisible by 8.
So, the fourth option is different from the other three options as 75 is not divisible by 8. Hence, the fourth option is correct.
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