Numbers

What's the length of the Great Wall of China?

• 21,195 km

• 21,196 km

• 20,196 km

What's the weight of an adult human brain?

• About 1.5 kg

• About 2.5 kg

• About 3 kg

What's the amount of sugar in a typical can of Coke?

• About 30g

• About 50g

• About 39g

what is the average number of breaths per minute?

• 25

• 16

• 10

what is the average number of breaths per minute?

• 25

• 16

• 10