Multiple choice

Each of the following number series one number is wrong. Find out the odd number. निम्नलिखित प्रत्येक संख्या श्रृंखला में एक संख्या गलत है विषम संख्या को ज्ञात कीजिए। 64 729 10000 1331 1728 28561 196

  1. 225

  2. 10000

  3. 1331

  4. 729

  5. 64

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The series should be cubes of prime numbers: 2³=8, 3³=27, 5³=125, 7³=343, 11³=1331, 13³=2197, 17³=4913. The given series is completely garbled. Among the options, 1331 (11³) is the only perfect cube of a prime, making it the correct choice for what should be in the series.