The measurement 0.000065 cm written in scientific notation is: 1.5 × 10-8cm
Chat with our AI personalities
I would say 3.5 x 1056.
10000. 0000 to 9999
85,000,011 = (8 x 1000000000) + (5 x 100000000) + (0 x 10000000) + (0 x 1000000) + (0 x 100000) + (0 x 10000) + (0 x 1000) + (0 x 100) + (1 x 10) + (1 x 1)
If numbers can be repeated and zeroes are allowed to lead, this is simply all natural numbers in the set {0000 - 9999}, for a total of 10,000 possible combinations. If numbers cannot be repeated, this becomes a permutation problem; out of 10 possible digits, permute four of them. This evaluates as: nPr = n! / (n-r)! 10P4 = 10! / (10-4)! 10P4 = 1 * 2 * 3 * ... * 6 * 7 * 8 * 9 * 10 / 1 * 2 * 3 * 4 * 5 * 6 10P4 = 7 * 8 * 9 * 10 10P4 = 5040 There are thus 5,040 possible combinations of four of the digits in 0-9 if any digit is not used twice and 0 is allowed to be a leading digit.
Oh, dude, you want me to list out every possible 4-digit combination using numbers 0 through 9? That's like asking me to count all the grains of sand on a beach! There are 10,000 different combinations, so you might want to grab a snack and get comfy while I rattle them off... or you could just use a combination generator online, but hey, where's the fun in that, right?