Riddles
Maths
100

What has four legs but can’t walk?

A chair

100

2x+2+2x=20

x=2.

200


What disappears as soon as you say its name?



Silence


300

What is seen in the middle of March and April that can’t be seen at the beginning or end of either month?

The letter: "R"


300


What is the probability that a randomly chosen number from 1 to 30 is a multiple of 5?




20%

400


What thrives when you feed it but dies when you water it?



A fire


400

The distance between two towns on a river is 48 km. When a boat moves downstream, it takes 1 hour less than when it moves upstream. The river’s speed is 4 km/h. Find the boat’s own speed.

20 km/h.

500


What's lighter than a feather but impossible to hold for much more than a minute?



Your breath


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