Find the missing number? 27, 125, 343, 729, _________, 2197

Correct Answer: 1331

Explanation –

The given sequence is made up of cubes of consecutive odd integers.

• 27 = 3^3

• 125 = 5^3

• 343 = 7^3

• 729 = 9^3

• 1331 = 11^3 (this is the missing term)

• 2197 = 13^3

Therefore, the missing number in the series is 1331.