Q: Is 9 10 really 21

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no 9 + 10 = 19 11 + 10 = 21 9 + 12 = 21

No you can not prove that 9 +10 = 21.

19

In standard arithmetic, 9 + 10 actually equals 19, not 21.

9+10=21

21

It is 21 hours.Note: 10 am to 10 pm is 12 hours, 10 pm to 7 am is 9 hours, 12 + 9 = 21

9+10 =21 is sated from a popular vine

12 + 9 = 21. 21/10 =2 and 1/10 (21 divided by 10).

21

10 + 9 = 19

The Least Common Multiple (LCM) for 9 21 10 12 is 1,260.