Question : Directions: In the following question, select the one which is different from the other three alternatives.
Option 1: 49
Option 2: 36
Option 3: 65
Option 4: 100
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Correct Answer: 65
Solution :
Let's check the options –
First option:
49; 7
2
= 49; 49 is a perfect square.
Second option:
36; 6
2
= 36; 36 is a perfect square.
Third option:
65; 65 is not a perfect square.
Fourth option:
100; 10
2
= 100; 100 is a perfect square.
So, the third option is different from the other three options as 65 is not a perfect square. Hence, the third option is correct.
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