Sunday, April 9, 2017

Combinations and Permutations Calculator

Question from Jessie, a student:
I need all of the 8 digit combinations using the numbers 1-20.
i.e. 1 2 3 4 5 6 7 8, 2 3 4 5 6 7 8 9 like wise
no number should be repeated in one combination.
Thanks

Find the number of combinations and/or permutations that result when you choose r elements from a set of n elements.
For help in using the calculator, read the Frequently-Asked Questions or review the Sample Problems.

  • Choose the goal of your analysis (i.e., to compute combinations or permutations).
  • Enter a value in each of the unshaded text boxes.
  • Click the Calculate button to display the result of your analysis.
Choose goal
Number of sample points in set ( n )
Number of sample points in each combination ( r )
Number of combinations (n things taken r at a time)

because of a very hard work I've been having years now...I discouvered that radioactive is also found on diazinon...so damm easy to get ....I know that we all had that concept of radiotherapy products, cancer medication, besides of course radioactive waste...however...this is as much radioactive as deuterium

Cielo e terra (duet with Dante Thomas)