About the number 325, five boys said:

Andrei: “ This is a 3-digit number”

Boris: “ All digits are distinct”

Vick: “ The sum of the digits is 10”

Greg: “ The units digit is 5”

Danny: “ All digits are odd”

Which of the boys was wrong ?

Vero’s mother prepares sandwiches with two slices of bread each. A package of bread has 24 slices. How many sandwiches can she prepare from two and a half packages of bread ?

There are three families in my neighbourhood with three children each; two of the families have twins. All twins are boys. At most how many girls are in these families ?

In London 2012, the USA won the most medals: 46 gold, 29 silver and 29 bronze. China was second with 38 gold, 27 silver and 23 bronze. How many more medals did the USA win compared to China ?

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 ?