find the odd one out from the option:-(100,121),(25,36),(81,90),(64,81)
Answers
Given :- find the odd one out from the option:-(100,121),(25,36),(81,90),(64,81)
Answer :-
Logic :- a², (a + 1)² .
Explanation :-
→ 100 , 121 = 10² , 11²
→ 25 , 36 = 5² , 6²
→ 81 , 90 = 9² , 90 = Not a perfect square
→ 64 , 81 = 8² , 9²
therefore, we can conclude that, (81, 90) are odd one out since 90 is not a perfect square.
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Given : (100,121),(25,36),(81,90),(64,81)
To Find : odd one out
Solution:
(100,121)
100 = 10²
121 = 11²
(25,36),
25 = 5²
36 = 6²
(81,90)
81 = 9²
90 ≠ 10²
(64,81)
64 = 8²
81 = 9²
All pairs are ( n² , (n + 1)² ) except (81,90)
Hence (81,90) is odd one out
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