Quiz-Wiz

You would never know. The person is taught from birth what the NAME of the color is that he sees. He has no idea that we all see the color differently and it's actually a different color. If he saw what we see as blue (which is supposedly green to the rest of seeing correctly) and has been trained to call it green all his life, it's still green to him and he'd refer to it as such, therefore we'd never know that he's seeing it as we see the color blue.
 
Late to the party, as usual, but here's a thought or two:

Q.1
Purely hypothetical question. Suppose a person sees blue as green and green as blue, from his/her very birth; will that anomaly recognized by the person, or society at any incidence? Regards :D
Color blindness will mean you probably won't be an aircraft pilot. My father was color blind and was disqualified for flight crew when he was in the Navy.

Q.3: We have symbols from zero (0) to nine (9) and there after we use combinations of symbols for higher numbers? Why it is so? why we did not start writing it for 9 or for 11?

To expand on the decimal systems (base) - a common one in the computer field is hexadecimal, or base 16. You use 0-9, then a,b,c,d,e,and f.
 

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