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21
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option A
Solution:
In all other pairs, the second number is obtained by multiplying the square of the first number by a prime number.
Thus, 108 = 62 × 3, 75 = 52 × 3, 99 = 32 × 11.
22
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option D
Solution:
In all other pairs, first number is 9 times the second.
23
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option C
Solution:
In all other pairs, second number is 6 times the first.
24
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option C
Solution:
In all other pairs, second number is the cube of the first.
25
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option C
Solution:
In all other pairs, first number is 35 more than the second.
26
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option D
Solution:
In all other pairs, the sum of the digits in the difference of the two numbers is 4.
27
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option D
Solution:
In all other pairs, the sum off the digits of the second numbers is twice the sum of the digits of the first number.
28
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option B
Solution:
In all other groups, the second, third and first letters are alternate letters of the alphabet in order.
29
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option B
Solution:
All other letters occupy the even-numbered positions in the English alphabet.
30
Find the odd number / letters / word from the given alternative:
Discuss
Answer & Solution
Answer: Option C
Solution:
Putting A = 1, B = 2, ..........Z = 26
we have :
DG2 = G - (D + 2) = 7 - (4 + 2) = 1;
EK5 = K - (E + 5) = 11 - (5 + 5) = 1;
JR6 = R - (J + 6) = 18 - (10 + 6) = 2;
PY8 = Y - (P + 8) = 25 - (16 + 8) = 1;
RV3 = V - (R + 3) = 22 - (18 + 3) = 1.