BrainDare.com - daily riddles, puzzles & brain teasers!
Brain teasers
Question 1
What's the next number?

10 11 13 16 ?

18 19
20 21
Question 2
3 + 3 x 3 + 10
22 28
78 42
Question 3
A racing car has a speed of 160 mph. What is its speed in fps?
23.47 fps 12 fps
234.67 fps 116 fps
Question 4
An athlete runs 3 km in 5 minutes.
What is his average speed in meters per second?
10 m/s 12 m/s
8 m/s 9 m/s
Question 5
What's the next number?

10 6 4 3 ?

3.5 2
4 2.5
Question 6
Divide 30 by a half and add ten. What do you get?
25 40
55 70
Question 7
1 = 11, 2 = 22, 3 = 33, 4 = 44, 5 = 55, 6 = 66, 11 = ?
11 111
121 1111
Question 8
What's the next letter? (this one can take days to solve!!)

M T W T ?

S F
M T
Question 9
It takes Eric 3 hours to clean the house. It takes Peter 2 hours to clean the house. How long would it take for them to clean it together?
60 minutes 80 minutes
72 minutes 75 minutes
Question 10
No calculator!! 761*485 = ?
369085 359085
1369085 362085

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