An easy one this week!
Albert’s been having a tough week at the clock factory. First he designed an odd Roman Numeral clock face, and then can’t work out how long it would take his favourite clock to chime 10 o’clock. However, things are looking up. He has been asked to go down to the basement and retrieve a rare clock from the company safe. When he gets there he sees the following numbers on the safe door….
77 – 49 – 36 – xx
the next number in the sequence will open the safe. What number should Albert use to get at the rare clock?