Riddles, one at a time

Which Tank Fills?

Which tank fills up FIRST?

Video · Hard Challenge link
Answer

E

The cap stops A. Water takes each lowest open pipe: B, then D, then E.

Two Pictures, One Word

Join the two pictures into one word.

Video · Easy Challenge link
Answer

RAINBOW

Rain + bow = rainbow.

Which Ring? Dots and Stripes

Which tile belongs in the middle?

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Answer

C

Only tile C has a dot AND stripes.

Flip-Flop Gates

Gates start as shown and flip after each box. Where does box 3 land?

Video · Hard Challenge link
Answer

BIN C

After boxes 1 and 2, box 3 goes left, right, right.

Day After Tomorrow

What day is today?

Video · Easy Challenge link
Answer

Wednesday

Two days back from Friday: Thursday, then Wednesday.

Climbing Robot

A robot climbs a 10 m wall. Each day it climbs 3 m; each night it slips back 2 m. On which day does it reach the top?

Video · Genius Challenge link
Answer

Day 8

After night 7 it is at 7 m; day 8 takes it to 10 m.

Challenge link