Puzzle 1
Cabbage is to sprouts as carrot is to:
pea cucumber potato tomato artichoke celery
Puzzle 2
A large freshwater reservoir has two types of drainage system. Small pipes and large pipes.
6 large pipes, on their own, can drain the reservoir in 12 hours.
6 small pipes, on their own, can drain the reservoir in 18 hours.
How long will 6 large pipes and 6 small pipes take to drain the reservoir?
Puzzle 3
What number is …
… one half of one third of one quarter of 360?
Puzzle 4
Can you fill the thermometers with mercury, such that the numbers outside the grid indicate how many cells in each row and column contain mercury?
Mercury always starts filling from the bottom of a thermometer, and not every thermometer has to contain mercury.
Puzzle Copyright © Johan de Ruiter
