an appliance shop orders 24 boxes of small electric fans ( where all boxes contain the same number of small fans) and 25 boxes of bigger electric fans ( where all boxes also contain the same number of bì fans). The total number of fans ordered is 1200. How many fans are there in each box that contains small fans

A factory has male and female workers in the ratio of 3 : 5. Some female workers but no male workers resigned. 5 more workers are then employed. The ratio of male to female workers is now 4 : 3 while the number of female workers is 15. Find possible original numbers of female workers.

A certain number of fifty-cent coins is to from an equilateral triangle. The same number of fifty-cent coins can also be used to from a square. The number of fiftty-cent coins on each side of the square is 6 fewer than the number of fifty-cent coins on each side of the equilateral traingle. How many fifty-cent coins are there altogether?

There're four black box and each box has the same number of marbles. Only one of the following statements is correct about the number of marbles in it.

- Five or Six

- Seven or Eight

- Six or Seven

- Seven or Five

How many marbles are there in each box?

An ant is clinging to one corner of a box in the shape of a cube. The ant wants to get to the most distant corner of the box by crawling only along the edges of the cube and without ever revisiting a place it has been. How many different paths can the ant take to the most distant corner?

Fill in the circles with the numbers 1, 2, 3, 4, 5, 6 and 7. Each number can be used once without repetitions. The sum of the digits inside the circles at the four vertices of the square on the left is 15 and the sum of the digits inside the circles at the vertices of the regular pentagon on the right is 24. How many possible arrangements are there?

we have 1234 is a four-digit number that the product of it is 24.how many 4-digit number that the product of it is 24?

The harmonic mean of a set of non-zero number is the reciprocal of the average of the reciprocals of the number. What is the harmonic mean of 1, 2, and 4?