Harry participated in broom flight contest which consisted of five laps. The times when Harry passed the starting point are shown in the table. Which lap took the shortest time ?

It takes Ben 30 minutes to cut a long log of wood into six pieces. How long does it take him to cut another log of wood into nine pieces ?

Which tile must be added to the picture so that the light grey area is as large as the black area ?

Henry and John started walking from the same point. Henry went 1 km north, 2km west, 4km south and finally 1 km west. John went 1km east, 4km south and 4km west. Which of the following must be the final part of John’s walk so that he could reach the same point as Henry ?

A positive interger has three digits. The product of the digits is 135. What is the sum of the digits ?

The kangaroos A, B, C, D and E were sitting in this order, clockwise, around a circular table. When the bell rang, each kangaroo but one exchanged its position with a neighbour. The order of the kangaroos, clockwise, became A, E, B, D, C. Which kangaroo did not move ?

 A square can be formed using four of these five pieces. Which one will not be used ?

In a restaurant, there are 16 tables, each with 3, 4 or 6 chairs. The tables with 3 of 4 chairs can accommodate 36 people. The restaurant can accommodate 72 people. How many tables are there with 3 chairs ?

The points A, B, C, D, E and F lie on a straight line in that order. We know that AF = 35, AC = 12, BD = 11, CE = 12 and DF = 16. What is the distance BE ?

Parisa sets her marbles in groups of equal size on the desk. After the arranged the marbles in groups of 3, she found that there were 2 marbles left. Then she arranged the marbles in groups of 5, and again there were 2 marbles left. At least how many more marbles does she need so that there won’t be any left when she arranges them in groups of 3 and in groups of 5 ?

 A plane takes off from Vienna at 11:00 am local time and arrives in Toronto at 1:00 pm local time. On average, it takes 8 hours for a plane of this type to fly this distance. What time is it in Toronto when it is 7:00 am in Vienna ?

What is the greatest number N, which, when divided by 7, has a remainder that is equal to the quotient ? 

Granny has 10 grandchildren, all of different ages. Alice is the eldest. The sum of the ages of all grandchildren is 180. At least how old is Alice ? 

The king and his messengers are travelling from the castle to the summer palace at a speed of 5 km/h. Along the way, the king sends a messenger back to the castle; an one hour later, he sends back another messenger. If the messengers travel at a speed of 10 km/h, what is the time between their arrivals at the castle ?

The 3 x 3 x 3 cube in the picture is made of 27 small cubes. 

How many small cubes do you have to remove to see the following result when viewing from the right, from above, and from the front ?

Andy made a playlist with 5 songs ( A, B, C, D and E ) Song A is 3 minutes long, song B is 2 minutes and 30 seconds, song C is 2 minutes, song D is 1 minute and 30 seconds, and song E is 4 minutes. The songs play in this order in a continuous loop. If Andy left the house when song C was just starting, what song was playing when he got back home 1 hour later ?

Trees grow on only one side of Park Avenue. There are 60 trees in total. Every second tree is a maple, and every third tree is either a linden or a maple. The remaining trees are birches. How many birches are there ? 

Dan entered the numbers from 1 to 9 in the cells of a 3 x 3 table. He began by placing the numbers 1, 2, 3 and 4 as shown in the picture: 

It so happened that for the number 5, the sum of the numbers in the adjacent cells ( having a common side ) was equal to 9. What is the sum of the numbers adjacent to the number 6 ?

Rabbit Vasya loves cabbage and carrots. In a day, he eats either 9 carrots, or 2 heads of cabbage, or 1 head of cabbage and 4 carrots. But some days he only eats grass. Over the last 10 days, Vasya ate a total of 30 carrots and 9 heads of cabbage. On how many of these 10 days did he eat only grass ? 

A thin colourfull ribbon is stuck on a transparent plastic cube as shown. 

Which of the following pictures does not represent the cube as seen from any perspective ?

Bob is going to visit four cities. He will start from and end up in his home town. The figure shows a map of the regions with the cities. The roads are only along the grid lines. Bob wants to make the trip as short as possible. Which route should Bob follow ?

A rectangle with a perimeter of 34 cm was divided into two smaller rectangles with perimeters 28 cm and 30 cm, as shown in the figure.

What is the area of the big rectangle ?

Which answer completes the addition tree ?

Nathalie wanted to build a large cube out of lots of small cubes. How many cubes are missing from the picture on the right that would be needed to build the large cube on the left ?

How far must Maria walk to reach her friend Bianca ?