In the pool is numbers from 1 to 115. What is the probability that a randomly selected number is not a prime number?

Correct answer:

p =  73.9 %

Step-by-step explanation:


Did you find an error or inaccuracy? Feel free to write us. Thank you!


Tips to related online calculators
Would you like to compute count of combinations?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions:

  • Raffle
    tombola How many raffle tickets must be purchased by Peter in raffle with issued 200 tickets if he wants to be sure win at least 3 price? In the raffle draws 30 prices.
  • Raffle
    tombola There are 200 draws in the raffle, but only 20 of them win. What is the probability of at least 4 winnings for a group of people who have bought 5 tickets together?
  • Reminder and quotient
    prime There are given numbers A = 135, B = 315. Find the smallest natural number R greater than 1 so that the proportions R:A, R:B are with the remainder 1.
  • The accompanying
    books The accompanying table gives the probability distribution of the number of courses randomly selected student has registered Number of courses 1 2 3 4 5 6 7 Probability 0.02 0.03 0.1 0.3 0.4 - 0.01 respectively. a) Find the probability of a student registe
  • Probability
    fractions How probable is a randomly selected three-digit number divisible by five or seven?
  • Bulbs
    bulbs In the box are 6 bulbs with power 75 W, 14 bulbs with power 40 W and 15 with 60 W. Calculate the probability that a randomly selected bulb is:
  • Family
    family 94 boys are born per 100 girls. Determine the probability that there are two boys in a randomly selected family with three children.
  • Prime number
    prime Jan wrote any number from 1 to 20. What is the probability that he wrote the prime number?
  • Probability of failures
    binomial In certain productions, the probability of failures is 0.01. Calculate the probability that there will be more than one failure among the 100 selected products if we return the selected products to the file after the check.
  • Win in raffle
    tombola The raffle tickets were sold 200, 5 of which were winning. What is the probability that Peter, who bought one ticket will win?
  • One green
    gulicky In the container are 45 white and 15 balls. We randomly select 5 balls. What is the probability that it will be a maximum one green?
  • Lifespan
    normal_d The lifetime of a light bulb is a random variable with a normal distribution of x = 300 hours, σ = 35 hours. a) What is the probability that a randomly selected light bulb will have a lifespan of more than 320 hours? b) Up to what value of L hours can the
  • IQ Intelligence quotient
    normal_d Intelligence quotient (IQ) is a standardized score used as the output of standardized intelligence psychological tests to quantify a person's intelligence with the rest of the population (respectively to a given group). Intelligence has an approximately n
  • Air draft
    numbers2 The numbers 1,2,3,4,5 are written on five tickets on the table. Air draft randomly shuffled the tickets and composed a 5-digit number from them. What is the probability that he passed: and, the largest possible number b, the smallest possible number c, a
  • Screws
    mosadz The box contains 8 iron, 6 brass, and 4 titanium screws. What is the probability that the randomly selected screw will not be brass?
  • Population variance
    binomial1 In a California community college, 60% of students will transfer to a college in the CSU system. The number of students in a sample who will transfer follows a binomial distribution. If 8 students are randomly selected, find the population variance σ2 of
  • Records
    binomial Records indicate 90% error-free. If 8 records are randomly selected, what is the probability that at least 2 records have no errors?