10 pots of flowers were placed evenly along the school corridor starting at the end of the corridor. The distance between every 2 pots is 2 m. How long is the corridor?
There were 14 children at a Chinese New Year Party. Each girl was given 4 balloons, each boy was given 2 balloons. Altogether, 44 balloons were given out. How many girls were at the party?
A teacher has a bag of sweets. If she gives each student 10 sweets, 3 sweets will remain. If she wishes to give each student 11 sweets, she will be short of 2 sweets. How many sweets does the teacher have?
There are 5 red balls, 4 green balls, 2 yellow balls and 1 white ball in a bag. Jane is blindfolded. At least how many balls must she remove from the bag to guarantee she has drawn 3 balls of the same colour?