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81
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option C
Solution:
49 is the only perfect square number in the group.
82
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option C
Solution:
Each of the number except 345, is one more than the cube of a certain number.
83
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option E
Solution:
Each of the numbers except 399, is one more than the square of a certain number.
84
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option D
Solution:
Each of the numbers except 380, is either one less or one more than the square of a certain number.
85
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option C
Solution:
In all the numbers, the sum of the digits is 28.
86
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option D
Solution:
Each of the numbers except 144, is a perfect cube.
87
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option E
Solution:
83 is the only prime number in the group.
88
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option C
Solution:
131 is the only prime number in the group.
89
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option B
Solution:
In all other numbers, the sum of the digits is 17.
90
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option B
Solution:
Each of the numbers except 168, is a perfect square.