Logical Interviews

1

Without lifting pen from paper join these dots with four straight lines:

Answer submitted by Mike Bosch

2 A man and his son were admitted unconscious to a local Casualty (Accident and Emergency) department after a car crash. The Casualty Doctor on duty took one look at them and said that they although they had the skills somebody else would have to deal with them. Why was this? The Doctor was his wife.

3 You have nine ball-bearings, all of the same size but one slightly heavier than the others, though not enough to be detected by holding them. You have some balance scales and are allowed to do only two weighings of any number of ball bearings. How do you find the heavy one? Place the ball bearings in a 3 x 3 grid and label each ball bearing according to its position in the grid, A1, A2, A3, B1, etc. You are allowed two weighings so compare the weights of any two rows (the 3 ball bearing in that row) and note which row is the heavier (if any). Replace the ball bearings and then as with the rows compare the weight of any two columns. note which is the heavier column. Replace the ball bearings. The heavier row and column will give the position of heavy ball bearing in the grid. If either weighing is a perfect balance then you know the heavier ball bearing is the row or column you didn't weigh.

Alternative:

Put any 3 balls on each side of the scale. This will tell you which group of 3 has the heavy ball. For the second weighing, put 1 of the heavy group on each side of the scale. If the scale is balanced, the heavy ball is the one you didn't weigh. This way you don't need to keep track of which ball is which.

Sent in by Garrett Roberts

4 So you can spell coke, joke, poke but how do you spell the white of an egg? "Albumen" - Which is the white of an egg. Did you think it was "yolk"?

Sent in by Renai McLean 5 Name a commonly used used four-letter word ending in E-N-Y (If you find this easy it is because you are seeing it writing. Try it on someone...