THIS MONTH'S QUIZ
1. I drive five miles to work each morning through heavy
traffic. If I could drive 10 mph faster the journey
would take 5 mins. less. How fast do I normally travel?
2. Choose five numbers from this set of ten so that they
add together to give 300:
37, 42, 43, 51, 60, 65, 84, 87, 88, 98
3. (a) My secretary typed four letters, and four
corresponding envelopes. She put one letter into each
envelope, but not one was in its correct envelope. In
how many ways could she do this?
(b) The following day she had six letters to type, and
again got every one into a wrong envelope. In how many
ways could she do this?