3. The front number plate of Max's car fell off. He put it back upside down but luckily this didn't make any difference. Which of the following could be Max's number plate?
A
04 NSN 40
B
80 BNB 08
C $03 \mathrm{HNH} 30$
D 08 XBX 80
E $60 \mathrm{HOH} \mathrm{09}$
Solution
E

Neither a " 4 " nor a " 3 " will look the same when turned upside down. The same is true about the letter "B". However, the letters "H" and "O" and the number "0" do look the same. The number "6" looks like a "9" when turned upside down and vice versa. Therefore the only number plate shown which would look the same if fitted upside down is $60 \mathrm{HOH} \mathrm{09}$.