Multiple choice

What approximate value should come at place of question mark (?) in the following questions?(133\times67+49\times112=?^3)

  1. 18

  2. 21

  3. 27

  4. 24

  5. 30
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

133 × 67 = 8911 and 49 × 112 = 5488. Their sum is 8911 + 5488 = 14399. Checking which cube is closest: 18^3 = 5832 (difference of 8567), 21^3 = 9261 (difference of 5138), 24^3 = 13824 (difference of 575), 27^3 = 19683 (difference of 5284). The sum 14399 is closest to 24^3 = 13824.

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