Daily Challenge G-3 & 4 31 May

Which number is hidden behind the square?

• 1

• 6

• 4

• 3

In order to slay a dragon, Mathias has to cut off all of its heads. As soon as he has cut off 3 heads, a new one

grows back immediately. After Mathias has cut off 13 heads the dragon is dead.

How many heads did the dragon have initially?

• 6

• 12

• 15

• 9

Linda fixes 3 photos on a pin board next to each other. She uses 8 pins to do so.

Peter wants to fix 7 photos in the same way.

How many pins does he need for that?

• 23

• 16

• 21

• 11

Sara has 16 blue marbles. She can swap her marbles in the following way:

For 3 blue marbles she gets 1 red marble.

For 2 red marbles she gets 5 green marbles.

What is the maximum number of green marbles she can get?

• 8

• 15

• 10

• 20

In an ice cream shop there is some money in a drawer. After 6 ice creams were sold, there were 70 euros left in the drawer. After a total of 16 ice creams were sold, there were 120 euros left in the drawer. How many euros were there in the drawer at the start?

• 40

• 50

• 30

• 20

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