The generalised syntax for a real number representation

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The generalised syntax for a real number representation is __________

1. [digits][(E|e)[(+|-)]digits].
2. [.digits][digits][(E|e)[(+|-)]digits].
3. [digits][.digits][(E|e)[(+|-)]digits].
4. [digits][+digits][(E|e)[(+|-)]digits].
5. None of these

Correct Option: C

Floating-point literals may also be represented using exponential notation: a real number followed by the letter e (or E), followed by an optional plus or minus sign, followed by an integer exponent. This notation represents the real number multiplied by 10 to the power of the exponent.