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Daily 30 Seconds 



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Can you solve the mathematical questions in 30 seconds?

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Easy – Apr 12

−1
×3
−10
HALVE
+15
×5
−3
÷2
+3
?
 

Puzzle Copyright © Kevin Stone



Medium – Apr 12

DOUBLE
+5
×7/9
−12
SQUARE
−1
×5/8
×2
−19
?
 

Puzzle Copyright © Kevin Stone



Hard – Apr 12

HALVE
×41/3
−4
÷7
+1
×31/2
×25%
÷14
SQUARE
?
 

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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