quantitative data is the data that uses numbers and or amounts.
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A coulomb (C) is a unit for electrical charge. The symbol in SI is C. The meaning is 1 C= 1 A x 1s (ampere per second).
You almost always use numbers because that is saying you have more than one number. "Number's" would be used to say that a number has ownership of something, which is ridiculous. The more you know!
to analysis the theory perfectly and give concerned answers
I'm assuming you're asking about binary code, which uses combinations of just two digits - 0 and 1 - to encode electronic information.