The Answers Quiz 1 Clock Watching What number

The Answers Quiz

1. Clock Watching What number is this? • It is half of one of the numbers on the clock face. • And two-thirds of another. • And three-quarters of another. A. 4 B. 3 C. 6 D. 12 E. None of the above

1. Clock Watching What number is this? • It is half of one of the numbers on the clock face. • And two-thirds of another. • And three-quarters of another. A. 4 B. 3 C. 6 D. 12 E. None of the above 6 is half of 12, two-thirds of 9 and three-quarters of 8

2. Tennis In a knockout singles tennis tournament there are 78 entries. How many matches must be played to decide the winner? A. 38 B. 77 C. 78 D. 39 E. None of the above Mathematical Lateral Thinking Puzzles, Sloane and Mac. Hale

2. Tennis In a knockout singles tennis tournament there are 78 entries. How many matches must be played to decide the winner? A. 38 B. 77 C. 78 D. 39 E. None of the above Mathematical Lateral Thinking Puzzles, Sloane and Mac. Hale In each match one player is knocked out

3. Shapes in shapes •

3. Shapes in shapes • What about the smallest circle that can contain a square of area 1? What if we swap the square for a triangle, or a pentagon?

4. Half an Egg Chris came to a market to sell some eggs. Three people bought the eggs. The first buyer took half the eggs plus half an egg. The second buyer took half the remaining eggs plus half an egg. The third buyer bought what was left over: 1 egg. How many eggs were there initially? A. 4 B. 5 C. 6 D. 7 E. None of the above

4. Half an Egg Chris came to a market to sell some eggs. Three people bought the eggs. The first buyer took half the eggs plus half an egg. The second buyer took half the remaining eggs plus half an egg. The third buyer bought what was left over: 1 egg. How many eggs were there initially? A. 4 B. 5 C. 6 D. 7 E. None of the above