Find the odd word/letters/number pair from the given alternatives.

Concept: In an “odd one out” number question, three of the four given values share a common numeric property (commonly being perfect squares, perfect cubes, or primes), while exactly one value does not share it. Testing each value against a known property — such as whether it is a perfect cube — isolates the outlier directly.

Application: Check each value for the perfect-cube property:

• 125 = 5 × 5 × 5 = 53 — a perfect cube.

• 343 = 7 × 7 × 7 = 73 — a perfect cube.

• 1000 = 10 × 10 × 10 = 103 — a perfect cube.

• 900 = 30 × 30 = 302 — a perfect square, not a perfect cube.

Cross-check: No integer cubed equals 900 — 93 = 729 and 103 = 1000, so 900 lies strictly between two consecutive cubes and cannot itself be a cube — confirming it breaks the pattern shared by the other three values.

Result: 900 is the odd one out.