Brain Warm-Up

Question 1

Puzzle 1

0.3

3

0.03

0.9

Question 2

Puzzle 2

A boy paid 11 rubles for a bottle with a cork. The bottle costs 10 rubles more than the cork. How much does the cork cost?

Your answer

Enter your answer here

Question 3

Puzzle 3

You have three keys for three suitcases with different locks. Each key fits only one suitcase. What is the minimum number of attempts needed to determine which key opens which suitcase?

2

3

4

5

6

Answer

10

Question 4

Puzzle 4

What number should be inside the black triangle?

Your answer

Enter your answer here

Answer

10

Question 5

Puzzle 5

You need to replace the ellipsis with a word that, when combined with other words, forms new words. What is this three-letter word?

Your answer

Enter your answer here

Brain Warm-Up

Composite puzzle