BrainTeasers

If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?

• 100 minutes

• 5 minutes

• 1 minute

• 20 minutes

A snail climbs up 3 feet during the day and slips back 2 feet at night. If the well is 30 feet deep, how many days will it take for the snail to get out of the well?

• 28 days

• 27 days

• 29 days

• 30 days

What is the next number in the sequence: 2, 6, 12, 20, 30, ...?

• 42

• 40

• 36

• 48

If you multiply this number by any other number, the answer will always be the same number. What is it?

• 0

• 1

• 10

• -1

A farmer has 17 sheep, and all but 9 die. How many are left?

• 17

• 9

• 8

• 0

If you write down all the numbers from 1 to 100, how many times do you write the digit 3?

• 10

• 11

• 20

• 19

If a train travels 60 miles in 1.2 hours, what is its average speed in miles per hour?

• 50 mph

• 60 mph

• 72 mph

• 48 mph

How many blocks?

• 7

• 8

• 9

• 19

What is the answer?

• 65

• 55

• 35

• 45

What can you break without touching it?

• a vase

• a window

• a bone

• a promise