How many triangles of all sizes can be seen in the picture below ?

Monica arrived in the Kangaroo Camp on July 25^th in the morning and left the camp on August 3^rd in the afternoon. How many nights did she sleep in the camp ?

Aline writes a correct calculation. Then she covers two digits which are the same with a sticker:

Which digit is under the stickers ?

In which figure is the number of black kangaroos bigger than the number of white kangaroos ?

Four workers are building a house. In five days they built half the house. But winter is coming and they want to finish building the house in two more days. How many friends should the workers call for help, if they do not want to bother more people than is necessary ?

A soccer coach is selecting a team amongst players who are from 20 to 35 years old. At least how many players should be selected for the team so that, for certain, two players are of the same age ?

Ann threw seven darts at the dartboard, shown in the figure, and scored 32 points in total. How many darts did not hit the dartboard ?

Kangaroo Hamish bought toys and gave the shop-assistant 150 dollars. He received 20 dollars back. Then he changed his mind and exchanged one of the toys for another. He got back an additional 5 dollars. What toys did Hamish leave the store with ?

The first three stages of a pattern are shown in the picture. How many black diamonds does the figure in stage 6 have ?

Eve arranged cards in a line as it is shown in the figure below. At each move, Eve is allowed to interchange any two cards. What is the smallest number of moves Eve needs to get the word KANGAROO ?

Seven children are standing in a circle. No two boys are standing next to each other. No three girls are standing next to each other. How many girls are there standing in the circle ?

Rabbit Borya likes cabbage and carrots very much. Each day, he eats either 9 carrots, or 2 heads of cabbage, or 1 head of cabbage and 4 carrots. Last week, Borya ate 30 carrots. How many headss of cabbage did he eat last week ?

The sum of the digits of the number 2014 is 7. How many numbers between 100 and 1000 also have 7 as the sum of their digits ?

Nick has written each of the numbers from 1 to 9 in the cells of the 3 x 3 table. Only four of these numbers can be seen in the figure. Nick has noticed that for the number 5, the sum of the numbers in the neighbouring cells equals 13  ( neighbouring cells are cells sharing a side ). He noticed the same applies to the number 6. Which number has Nick written in the shaded cell ?

On planet Kangaroo, each kangyear has 20 kangmonths and each kangmonth has 6 kangweeks. How many kangweeks are there in one quarter of a kangyear ?