PUZZLES
31
2
1 . Using exactly four straight lines , without taking your pen off the paper , can you join all nine dots ? You are not allowed to retrace your path .
4 . Using only one straight line , can you turn this into nine fifty ?
10 10 10
2 . How many hexagon-type shapes , in total , can you find in this puzzle ? Clue : there are more than 45 .
5 . How can you throw a ball so that it goes a short distance , comes to a total stop , reverses its motion , and then goes the opposite way ? You are not allowed to bounce it against anything , hit it with anything , or tie it to anything .
6 . What no . comes next to the sequence 16 , 21 , 26 , 26 , 12 , 5 = ?
3 . You are given a 10x10x10 cube composed of one thousand 1x1x1 mini-cubes glued together . If you removed the outermost layer , how many mini-cubes would you have removed ?
7 . After the recent snail racing contest , the four contestants were congratulating each other . Only one snail wore the same number as the position it finished in . Alfred ’ s snail wasn ’ t painted yellow nor blue , and the snail who wore 3 , which was painted red , beat the snail who came in third . Arthur ’ s snail beat Anne ’ s snail , whereas Alice ’ s snail beat the snail who wore 1 . The snail painted green , Alice ’ s , came second and the snail painted blue wore number 4 . Anne ’ s snail wore number 1 . Can you work out who ’ s snail finished where , its number and the colour it was painted ?
WINSPIRE : Empowering youth | February , 2017