Question : Directions: In the following question, find the odd number pair in the given alternatives.
Option 1: 11 – 110
Option 2: 9 – 72
Option 3: 7 – 42
Option 4: 5 – 30
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Correct Answer: 5 – 30
Solution :
Let's check the options –
First option:
11 – 110
→
11
×
(11 – 1) = 11
×
10 = 110
Second option:
9 – 72
→
9
×
(9 – 1) = 9
×
8 = 72
Third option:
7 – 42
→
7
×
(7 – 1) = 7
×
6 = 42
Fourth option::
5 – 30
→
5
×
(5 – 1) = 5
×
4 = 20
≠ 30
So, the fourth option does not follow the pattern. Hence, the fourth option is correct.
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