General quiz

7^2=?

• 14

• 49

• 77

• 21

2x+5=15, x=?

• 3

• 5

• 10

• 20

past tense of "run".

• Runned

• Running

• Runs

• Ran

What is Red planet?

• Venus

• Earth

• Jupiter

• Mars

Symbol for "water"

• H2

• O2

• HO2

• H2O