Rang a cúig agus a sé
Three men have different weights. The heaviest person weighs 30 kg more than the middle person.
The middle person weighs 50 kg more than the lightest person.
The total weight of the three people is 400 kg.
How much does each person weigh?
Rang a trí agus a ceathar
How would you put 30 apples in 4 boxes so that each box contains an odd number of apples? (Is there more than one possible answer?)
Rang a haon agus a dó
What number comes next in these sequences?
2, 4, 6, 8, - ,-, -,
3, 6, 9, -,-,-,
20, 16, 12, -, -, -,