 # Daily 30 Seconds Please consider supporting BrainBashers [hide].

Solve a random Easy - Medium - Hard Japanese-style logic puzzle chosen from today's collection.

Can you solve 3 mathematical questions in 30 seconds? You might need a pencil and some paper! Click 'start' to see the number you're starting with, and then follow the instructions until you get to the end.

−1
×4
+7
÷3
−6
×5
−13
HALVE
−10
?

SQUARE
−11
DOUBLE
+6
×3/4
÷6
+4
×2/9
−1
?

HALVE
−4
×25%
SQUARE
−1
×3/8
+3
÷4
+19
?

## Notes

All daily items change at midnight GMT (UTC+0).

• HALVE   divide by 2 (e.g. 10 ÷ 2 = 5)
• DOUBLE  multiply by 2 (e.g. 10 x 2 = 20)
• SQUARE  times by itself (e.g. 10 x 10 = 100)
• CUBE    times by itself twice (e.g. 10 x 10 x 10 = 1,000)
• ×3/5    find three fifths (e.g. 1/5 of 15 = 3, so 3/5 = 9)
• ×21/3   find two and a third (e.g. 2 1/3 of 15 = 2 x 15 + 5 = 35)
• ×10%    find 10% (e.g. 10% of 80 = 8)
• √       find the square root (e.g. the square root of 100 is 10)

I have deliberately chosen not include the answers - but you could use a calculator to see the value at each stage of the calculation.

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