The scales are in balance. How many plums counter balance a pear?

Winnie the Pooh, Rabbit, Piggy and Donkey study in different grades: first, second, third and fourth. Rabbit and Winnie the Pooh study neither in the first nor in the second grade. Find who studies in which grade if Piggy is older than Donkey and Winnie the Pooh is older than Rabbit?

The moth appeared in the house and started gnawing everything. It made 5 holes in clothes. Did any of mother’s dress remain undamaged if mother had 7 dresses?

The ten digits are traveling on the digit roads looking for their homes.  Each digit finds its home by following the inequality rules. Which two digits will not find a home?