Question : Directions: In the following question, select the one that is different from the other three alternatives.
Option 1: 65
Option 2: 85
Option 3: 35
Option 4: 25
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Correct Answer: 25
Solution : Here, all the numbers are multiples of different prime numbers.
Let's check each option –
First option:
65; 13 × 5 = 65
Second option:
85; 17 × 5 = 85
Third option:
35; 7 × 5 = 35
Fourth option:
25; 5 × 5 = 25. This is the multiple of the same prime number.
So, 25 is different as this is a multiple of the same prime number and others are multiple of the different prime numbers. Hence, the fourth option is correct.
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