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What's nine plus ten?

• twenty- one

• 19

• 21 because 9 + 10 = 19 adding the two one from the equal sign

• 21

how many miles is Earth to the moon? (google says)

• 3,840,079 miles

• 238606.538 miles

• 463847.302 miles

• 1834256.231 miles

What would 5+=  in schools calculator 

• +5

• Synthic error

• 5+

• 0

What is the answer to question number 1?

• 21 because 9 + 10 = 19 adding the two one from the equal sign

• 19

• 21

• twenty-one