ROLLING WITH MONEY
Sue was fiddling with two 10p coins, rolling one of them round the other. Martin came over. ‘You see these two identical coins?’ said Sue. ‘I am going to keep the one on the right still while I roll the one on the left round it without it slipping or sliding. What do you think will happen to the Queen’s head when it gets to the other side?’
‘The head will be upside down, of course!’ Martin replied. Sue smiled smugly. What is the correct answer?