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Daily 30 Seconds 


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Random: easy medium hard

Can you solve the mathematical questions in 30 seconds?

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Easy – Oct 01

+6
HALVE
−3
×2
+1
÷5
+10
×5
−19
?
 

Puzzle Copyright © Kevin Stone


Medium – Oct 01

−2
×5
−1
DOUBLE
+4
×1/2
−3
×3/7
×3
?
 

Puzzle Copyright © Kevin Stone


Hard – Oct 01

×2
+9
×2/13
−8
÷11
+1
×21/3
SQUARE
×3
?
 

Puzzle Copyright © Kevin Stone


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Notes 


Click 'start' to see the starting number, and then follow the instructions, one at a time, until you reach the end. Not everyone can solve every 30 Seconds puzzle within 30 seconds.

I have deliberately chosen not include the answers. You can use a calculator to see the value at each stage of the calculation.

Note: take a look at the information about the difficulty levels.

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