Babylonian mathematicians devised a counting system based on the number:

5

10

20

60

Q.2

How many years are encompassed by the ancient Metonic cycle (a near-exact common multiple of the solar year and the lunar month, named after Meton of Athens)?

10

12

13

19

Q.3

Italian merchant Leonardo of Pisa is famous for introducing what to Europe?

The compass

Arabic numerals

The abacus

Oranges

Q.4

A scientific explanation based on the fewest possible causes – named after William of Ockham – is known as:

Ockham’s razor

Ockham’s toothbrush

Ockham’s toothbrush

Ockham’s codpiece

Q.5

The supercomputer that defeated chess grandmaster Garry Kasparov was called: