Rang a cúig agus a sé
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, -, -, -,
