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Q: How many digits in 4 exponent 5?

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One way to view the exponent, especially when it is a natural number, is how many times something need to be multiplied by itself. So 4^5 has exponent 5 and base 4 and it means 4 multiplied by itself 5 times, ie 4x4x4x4x4 We can then extent this to negative integers and to an exponent of zero and then to rational exponents. More on that if you want to know.

5P4 where P is the permutation operator = 5!/(5-4)! = 5! = 5 x 4 x 3 x 2 x 1 = 120.

Assuming that the first digit can't be zero: If repetition of digits is permitted: (5 x 6 x 6) = 180 numbers of 3 digits. If repetition of digits is not permitted: (5 x 5 x 4) = 100 numbers of 3 digits.

Possible 5 digit combinations using 5 digits only 1 time is 5! or 5*4*3*2*1 or 120. Using 5 digits where numbers can be used 5 times is 55 or 3125.

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There are three digits: 4, 5, and 1.

120

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(4)5 = 1,024

There are 2 significant digits: 5 and 4

There are only 4 prime digits: 2, 3, 5 and 7.There are only 4 prime digits: 2, 3, 5 and 7.There are only 4 prime digits: 2, 3, 5 and 7.There are only 4 prime digits: 2, 3, 5 and 7.

One way to view the exponent, especially when it is a natural number, is how many times something need to be multiplied by itself. So 4^5 has exponent 5 and base 4 and it means 4 multiplied by itself 5 times, ie 4x4x4x4x4 We can then extent this to negative integers and to an exponent of zero and then to rational exponents. More on that if you want to know.

You move the decimal point to the left - by as many digits as the absolute value of the exponent, e.g., if the exponent is -5, you move the decimal digit 5 positions to the left.

Convertible string := <significand><exponent> <significand> := [<sign>]<digits>[.<digits0>] <exponent> := E[<sign>]<digits0> <sign> := { + | - } <digits> := <digit><digits0> <digits0> := <digit>* <digit> := { 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 }

4*5*5 = 100 if digits can be repeated. 4*4*3 = 48 if not.

142jyo

4^5 5 is the exponent.