# Probability

• Dec 10th 2013, 06:01 PM
leibnitz
Probability
Pls Fans i need ur help in this mathematical problem.............A number is chosen at random from the number 1 to 30 inclusive.What is the probability that the number will be divisible by 5?
THANKS FOR UR AID
• Dec 10th 2013, 06:16 PM
romsek
Re: Probability
what's the probability of picking any number?

how many ways can you pick a number divisible by 5

multiply
• Dec 10th 2013, 06:24 PM
Plato
Re: Probability
Quote:

Originally Posted by leibnitz
Pls Fans i need ur help in this mathematical problem.............A number is chosen at random from the number 1 to 30 inclusive.What is the probability that the number will be divisible by 5?

Here is a vocabulary lesson.
If one says "integers from one to thirty" means $1\le n\le 30$.
If one says "integers between one to thirty" means $1< n< 30$.

Now to answer question is: $\frac{{\left\lfloor {\frac{{30}}{5}} \right\rfloor }}{{30}} = \frac{1}{5}$
{"found_math": true, "script_math_tex": 0, "script_math_asciimath": 0, "math_annotations": 0, "math_alttext": 0, "mathml": 0, "mathjax_tag": 0, "mathjax_inline_tex": 0, "mathjax_display_tex": 0, "mathjax_asciimath": 0, "img_math": 0, "codecogs_latex": 3, "wp_latex": 0, "mimetex.cgi": 0, "/images/math/codecogs": 0, "mathtex.cgi": 0, "katex": 0, "math-container": 0, "wp-katex-eq": 0, "align": 0, "equation": 0, "x-ck12": 0, "texerror": 0}