Question : Directions: Which of the following letter clusters will replace the question mark (?) in the given series to make it logically complete?
MY 27, KZ 64, ?, GB 216, EC 343
Option 1: JB 81
Option 2: JA 81
Option 3: IA 125
Option 4: HB 100
Correct Answer: IA 125
Solution :
Given:
MY 27, KZ 64, ?, GB 216, EC 343
In the above-given series, subtract 2 from the place value of the first letter, add 1 to the place value of the second letter, and the numbers are the cube of consecutive numbers.
MY 27→MY; (3)
3
= 27
MY 27→M – 2 = K; Y + 1 = Z; (4)
3
= 64→KZ 64
KZ 64→K – 2 = I; Z + 1 = A; (5)
3
= 125→IA 125
IA 125→I – 2 = G; A + 1 = B; (6)
3
= 216→GB 216
GB 216→G – 2 = E; B + 1 = C; (7)
3
= 343→EC 343
So, IA 125 is the required term of the given series. Hence, the third option is correct.
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