Riddles, one at a time
Lemon, Tea and Dates
Picture · Medium
Challenge link
25
Lemon 10, cup 5, date 2. Multiply first: 5 + 20 = 25.
Fewest Tokens: Pay 6
Which tokens pay 6 with the fewest tokens?
Biggest first is not always fewest. Try every pair.
Video · Medium
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3 + 3
Just 2 tokens. Biggest first, 4 + 1 + 1, needs 3.
Lamp Code: Deduce the Lamps
What number does the last row show?
Compare the rows showing 3 and 5: they share one lamp.
Video · Expert
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14
Lamps worth 8, 4, 2, 1 fit every row: 2 + 1 = 3, 4 + 1 = 5, 8 + 1 = 9, 4 + 2 = 6. So 8 + 4 + 2 = 14.
Join the Dots
Join 3, 6, 9... in order. What appears?
Video · Easy
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C LANTERN
3 to 45 traces a lantern; the rest are decoys.
Shaded Part: Three Corners
What fraction of the square is gold?
Split the square into four quarters. How much of each quarter is gold?
Video · Expert
Challenge link
3/8
Each triangle is half a quarter: 3 × 1/8 = 3/8.