How many marbles are dropped into the glass of water?
- Five
- Nine
- Seven
- Eight
Show answer and solution
Correct answer: A. Five
1. The marbles push the water level up.
2. She drops 5 marbles in the glass.
3. She then marks the new level of water as 5 marbles.
_Source: syllabus Mathematics, 'Math-Magic', Ch 14 'How Big? How Heavy?'_