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How much zeros has the number $1000!$ at the end? If a number ends with n n zeros than it is divisible by 10n 10 n, that is 2n5n 2 n 5 n A factorial clearly has more 2 2 s than 5 5 s in its factorization so you only need to count how many 5 5 s are there in the factorization of 1000! 1000!
Is there a faster way to count jigsaw puzzle pieces? The old 1000 1000 -piece jigsaw puzzles in my home cannot be tested for completeness by mere counting Alas, my children have on occasion mixed up pieces from different puzzles, and having 1000 1000 pieces in a box does not guarantee that the puzzle is complete
How can find the numbers of digits of power numbers %132 = 3 ? #digits(1000) %133 = 4 ? log(1000) log(10)+1 %134 = 4 000000000000000000000000000 ? If the number is very large and only a bit larger than a power of 10 10, you could also have troubles if the precision is not high enough But for most of the numbers the formula works well and the calculation can be made even with a table calculator
Expected value of a coin toss - Mathematics Stack Exchange You flip a coin If you get heads you win \\$2 if you get tails you lose \\$1 What is the expected value if you flip the coin 1000 times? I know that the expected value of flipping the coin once i
What is mathematical basis for the percent symbol (%)? Percent means 1 part of 100 or 1 100 and is indicated with % Per mille means 1 part of 1000 or 1 1000 and is indicated with ‰, so it seems that these symbols indicate the mathematical operations
determining the number of bits required to represent a number in binary . . . I think you are (rightly) a little confused by the wording of the example in your textbook The example is interpreting the question "how many bits do you need to represent 48 48?" to mean "what is the minimum number of bits needed to represent 48 48?" The lower bound 31 <48 31 <48 is then relevant: and it should be a strict inequality: << not ≤ ≤ So -2 to your textbook!