English Day of Beijing Mathematics ClubPartⅠ: Questions 1 to 10, 10 marks each1
At the right is shown a 4 × 4 grid
We wish to fill in the grid such that each row, each column, and each 2 × 2 square outlined by the thick lines contains the digits 1 through 4
Some grids have already been filled in
Find the number of ways we can complete the rest of the grid
Answer: 2
The areas of the faces of a cuboid are 84 cm2, 70 cm2 and 30 cm2
Find the volume of the cuboid in cm3
Answer: 3
The fraction can be wrritten in the form where the greatest common divisor of m and n is 1, Find m+n
Answer: 4
Find the sum of all the integers N > 1 with the properties that the each prime factor of N is either 2, 3, 5 or 7, and N is not divisible by any perfect cube greater than 1
Answer: 5
A large fresh water r