Nine boxes each hold 0 marbles. How many marbles in all?
A1
B90
C9
D0
Answer & Solution
Correct answer: D. 0
1. Zero groups of anything hold nothing.
2. Any number multiplied by 0 is 0.
3. 9 is the answer to 9 × 1.
_Source: Wikipedia, Multiplication (CC BY-SA 4.0, rev 1378304279), Properties_
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