Multiple choice

What approximate value will come at place of question mark (?) in the following questions?(212 \times 89 - 32 \times 55 = ?^3)

  1. 21

  2. 23

  3. 26

  4. 18

  5. 29

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

212 × 89 = 18868. 32 × 55 = 1760. 18868 - 1760 = 17108. Cube root of 17108 ≈ 25.8, which approximates to 26. Checking: 26³ = 17576, which is close to 17108.