Level 3
There are 5 tennis players. Each player will have one match against each of the other 4 players. How many different matches are there to be arranged?
2 m
Level 3
How many shaded triangles will there be in Pattern 25?
3 m
Level 2
Find the sum of the even numbers ranging from 1 to 50.
2 m
Level 2
When all the even numbers from 2 to 20 are added up, what is the digit in the ones place?
2 m
Level 2
Study the pattern.
13 -14 = 112
14 - 15 = 120
15 -16 = 130
What is the value of 129 - 130?
2 m