Creative Mental workouts 2

Can you solve these mental workouts? Some need lateral thinking - solving problems by an indirect and creative approach, typically through viewing the problem in a new and unusual light.

Sequence    Top  

Look at this sequence:   8, 5, 4, 9, 1,7.

What comes next?


Lateral thinking 1    Top  

1. Would you rather a crocodile attack you or an alligator?

2. How many animals do I have if all but 3 are dogs, all but 3 are cats, all but 3 are pigs and all but 3 are cows?

3. Rearrange 'new door' to make one word instead.


Lateral Thinking 2    Top  

1. Which word pronounced wrong is right but pronounced right is wrong. The answer is not 'wrong'.

2. Can you stand behind your best friend, whilst at the same time, they stand behind you? Or is it impossible?

3. Why do scuba divers always fall backwards out of the boat?


Bears and Penguins    Top  

How many penguins will an average polar bear eat in any given month.

Assume that penguins live with a density of 1,000 penguins per square mile and can run at an average speed of 7 miles per hour on land and swim at 20 miles per hour.

Also assume that a polar bear has a territory of 10 square miles, can run at 25 miles per hour and swim at 10 miles per hour,

A polar bear could, as a maximum, only eat one penguin per hour and 7% of the land is next to the sea.


Lateral Thinking 3    Top  

1. How many times can you take 7 away from 49?

2. In Aberland, you cannot take a picture of a man with a wooden leg. Why not?

3. What occurs once in a minute, twice in a moment and never in a split second?


Move the sticks    Top  

These sticks make six squares.

Move two sticks and make four squares, one of them larger than the other three.

sticks puzzle

Letters to digits    Top  

Replace each letter for a digit so this calculation is correct.

A given letter always represents the same digit.


Spending £100    Top  

Pens cost £5 each, pencils cost £1 each and rubbers cost 5p each.

pens set

You have £100 to spend and must buy exactly 100 items and include at least one of each.

You must spend the full £100.

How many of each item do you buy?


Missing numbers    Top  

This calculation is made in such a way that first you multiply two numbers and then add to the result one extra number to get the final result.

Every asterisk in this calculation means some digit from 1 to 9, and every digit is used exactly once. 0 isn't used.

The object is to replace all the asterisks with digits from 1 through 9 so that the whole calculation is correct.


Number switch   Top  

Eight numbered cards are shown in two rows.

The first row adds up to 19, the second to 20

number switch

Switch the numbers between the two rows to make the additions the same total.


Cricket ball    Top  

If I dropped a cricket ball into a bucket of water which was at a temperature of 45° F and dropped another identical cricket ball into a identical bucket of water at a temperature of 30° F, which cricket ball would hit the bottom of the bucket first?


Is it obvious?   Top  

1) How long did the Hundred Years War last?

2) Which country makes Panama hats?

3) From which animal do we get catgut?

4) In which month do Russians celebrate the October Revolution?


Is it obvious? 2    Top  

1) What is a camel's hair brush made of?

2) The Canary Islands in the Pacific are named after what animal?

3) What was King George VI's first name?

4) Where are Chinese gooseberries from?


Bank Robber    Top  

Police know a bank robber named John is in a building.

However, they have no idea what he looks like.

They storm the building and find a policeman, fireman, plumber and postman all playing cards.

Without asking anything they immediately arrest the postman? How did they know he was John?