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Riddles, one at a time

Which object fits all three clues?

Video · Easy Challenge link
Answer

Umbrella

It opens in the rain, closes after, and has ribs: C.

What day will it be 100 days from today?

Video · Medium Challenge link
Answer

Monday

100 = 14 weeks (98 days) + 2 days. Saturday + 2 = Monday.

A melon weighs 2 kg plus one third of its own weight. How much does the melon weigh?

Text · Easy Challenge link
Answer

3 KG

The 2 kg must be the other two thirds, so one third is 1 kg and the melon is 3 kg.

Full explanation on the blog

Pieces may turn but never flip over. Which piece fills the hole?

Video · Medium Challenge link
Answer

PIECE C

Turn C a quarter turn: it drops right in.

A Picture Saying

Which saying does this picture show?

Picture · Hard Challenge link
Answer

ONCE IN A BLUE MOON

The word ONCE sits in a blue moon. The saying means very rarely.

Three chests: gold, silver and bronze. The treasure is in one of them. Exactly one of these labels is true. Gold: 'The treasure is in here.' Silver: 'The treasure is not in here.' Bronze: 'The treasure is not in the gold chest.' Which chest holds the treasure?

Text · Hard Challenge link
Answer

SILVER

If it were in gold or bronze, two labels would be true. Only silver leaves exactly one true label (bronze's).

Full explanation on the blog

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