Question : Directions: Three of the following four triads are alike in a certain way as they are formed by performing the same mathematical operations among themselves and thus form a group. Which triad does NOT belong to that group?
Option 1: 2 : 5 : 8
Option 2: 5 : 10 : 125
Option 3: 12 : 25 : 1728
Option 4: 3 : 7 : 27
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Correct Answer: 5 : 10 : 125
Solution : Let's check the given options – First option: (2 : 5 : 8)→((2 × 2) + 1) = 4 + 1 = 5; (2)3 = 8 Second option: (5 : 10 : 125)→((5 × 2) + 1) = 10 + 1 = 11 ≠ 10; (5)3 = 125 Third option: (12 : 25 : 1728)→((12 × 2) + 1) = 24 + 1 = 25; (12)3 = 1728 Fourth option: (3 : 7 : 27)→((3 × 2) + 1) = 6 + 1 = 7; (3)3 = 27
So, only the second option is different from the others. Hence, the second option is correct.
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Option 1: 24 : 25 : 5
Option 2: 35 : 36 : 6
Option 3: 8 : 15 : 3
Option 4: 3 : 10 : 2
Option 1: 12 : 47 : 60
Option 2: 4 : 16 : 20
Option 3: 2 : 7 : 10
Option 4: 5 : 19 : 25
Option 1: 36 : 13 : 7
Option 2: 16 : 9 : 5
Option 3: 72 : 16 : 8
Option 4: 1 : 3 : 2
Question : Directions: Three of the following four triads are alike in a certain way as they are formed by performing the same mathematical operations among themselves and thus form a group. Which triad does not belong to that group?
Option 1: 11 : 21 : 121
Option 2: 2 : 3 : 4
Option 3: 7 : 15 : 49
Option 4: 9 : 17 : 81
Option 2: 7 : 15 : 49
Option 3: 2 : 3 : 4
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