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Riddles, one at a time

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.

Which object fits all three clues?

Video · Easy Challenge link
Answer

Map

Its roads have no cars, its rivers have no water, and it folds into a pocket: A.

Only one word looks the same in the lake. Which one?

Video · Hard Challenge link
Answer

CHOICE

Every letter of CHOICE is the same top and bottom, so the water cannot change it.

I am a 4-digit number. My first digit is twice my last. My second digit is my first and last added together. All my digits add up to 20, and I am odd. What number am I?

Text · Genius Challenge link
Answer

6923

Call the last digit x: the digits are 2x, 3x, 20 - 6x and x. x can only be 1, 2 or 3; 1 breaks the third digit and 2 makes it even, so x = 3: 6923.

Twin Panels

How many TILES were changed?

Picture · Medium Challenge link
Answer

6

Dot, turn, colour, corners, shape and ring.

What is the SMALLER angle between the hands?

Video · Expert Challenge link
Answer

50°

Minute hand at 120°, hour hand at 60° + 10° = 70°: 50° apart.

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