If you fail to pass this test at least with a 10/15, you should definitely go back to school. Activate and speed up your brain with this test.

### If you fail to pass this test at least with a 10/15, you should definitely go back to school

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## How can you represent this sentence? In a conference of 43 people there are 10 times more smartphones than tablets

- T = 10S
- S = 10T
- T = S + 10

## What percentage of 12 is 3?

- 25%
- 20%
- 30%

## If a politician increases the number of followers from 500 to 600, his percentage increase was:

- 15%
- 100%
- 20%

## What number is 460 the 15% more?

- 400
- 529
- 475

## If the side of a square increases by 10%, how much does your area increase?

- 20%
- 40%
- 21%

## You have in a basket 4 white, 3 black, 6 red and 7 purple balls. What is the minimum number of balls to be taken to be sure of having two of the same color?

- 3
- 4
- 5

## If 3 dice are rolled, what is the possibility of adding 6?

- 5/108
- 5/36
- 8/36

## If you rehearse 8 themes for the festival, but you can only play 3 of them, how many possibilities do you have to choose the 3 themes of the 8 possible?

- 24
- 56
- 3

## How many different ways can you choose three books out of a total of six?

- 20
- 3
- 18

## What is the probability of adding less than 6 with two dice thrown simultaneously?

- 5/36
- 5/18
- 1/3

## Three consecutive odd numbers add up to 939. The smallest is worth:

- 303
- 311
- 315

## If 35% of a city are exclusively rights, and 55% exclusively left-handed. What percentage of the population is ambidextrous?

- 10%
- 15%
- 18%

## In a club consisting of 13 participants, 11 practice Ping pong and 10 chess. How many practice both sports?

- 5
- 7
- 8

## What is the average of 1/2, 5/6, 3/4 and 5/12?

- 2/5
- 7/8
- 5/8

## Find the value of z if the average of four values: 1; 0.8; 0.2 and Z is 0.6

- 0.2
- 0.4
- 1.4