# Prime number

Jan wrote any number from 1 to 20. What is the probability that he wrote the prime number?

**Result****Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):**

**Showing 0 comments:**

**Be the first to comment!**

#### To solve this verbal math problem are needed these knowledge from mathematics:

## Next similar examples:

- Numbers

Write smallest three-digit number, which in division 5 and 7 gives the rest 2. - Perctentages

35% of what number is 35? - Percents

How many percents is 900 greater than the number 750? - Reducing number

Reducing the an unknown number by 28.5% we get number 243.1. Determine unknown number. - Sum 10

What is the probability that two dice throw twice in a row will result the sum of 10? - Probability - tickets

What is the probability that when you have 25 tickets in 5000 that you wins the first (one) prize? - In the orchard

In the orchard, they planted 25 apple trees, 20 pears, 15 plums and 40 marbles. A strong late frost, however, destroyed a fifth of all new trees. Unfortunately, it was all the trees of one kind of fruit. What is the probability that the plums have died out - Percentages

52 is what percent of 93? - Cancer

Of the 80 people 50 people ill cancer. What percentage of people isn't ill? - Basketball

Peter and Franta threw to the basket. Each had 20 attempts. Peter scored thirteen and twelve Franta. Give them success in percentage. - Persons

Persons surveyed:100 with result: Volleyball=15% Baseball=9% Sepak Takraw=8% Pingpong=8% Basketball=60% Find the average how many like Basketball and Volleyball. Please show your solution. - Frameworks is bad

Calculate how many percent will increase the length of an HTML document, if any ASCII character unnecessarily encoded as hexadecimal HTML entity composed of six characters (ampersand, grid #, x, two hex digits and the semicolon). Ie. space as:   - The ball

The ball was discounted by 10 percent and then again by 30 percent. How many percent of the original price is now? - Profit gain

If 5% more is gained by selling an article for Rs. 350 than by selling it for Rs. 340, the cost of the article is: - Apples 14

Maya bought 18 apples. She used 50% of the apples to make apple pies and 1/3 of the apples was mixed with other fruits to make salad. How many apples were left? - Test points

If you earned 80% of the possible 40 points, how many points did you miss to get 100%? - Selling price

Find the selling price. Cost to store: $50 Markup: 10%