Find the wrong term in the given series. 125, 216, 343, 512, 729, 100
2025
Find the wrong term in the given series.
125, 216, 343, 512, 729, 100
- A.
343
- B.
729
- C.
100
- D.
125
Attempted by 1416 students.
Show answer & explanation
Correct answer: C
Key insight: The sequence lists consecutive cube numbers.
125 = 5^3
216 = 6^3
343 = 7^3
512 = 8^3
729 = 9^3
100 (given) should be 10^3 = 1000
Explanation: All given terms follow consecutive cubes from 5^3 to 9^3, so the sixth term should be 10^3 = 1000. The provided value 100 does not equal 10^3 and therefore breaks the pattern.
Conclusion: 100 is the wrong term; it should be 1000.