math

posted by .

Cher has forgotten the combination to her locker. She knows it consists of four numbers -- 3, 5, 7, and 9 -- but she can't recall the order. She decides to try every possible order until she gets the right one.

How many possible orders are there?

  • math -

    im pretty sure its 256. These r permutations right

  • math -

    Four possibilities for the first number.

    Four possibilities for the second number

    Therefore, 4x4 = 16 possibilities for the first two numbers.

    Four possibilities for the third number

    Therefore, 16x4 = 64 possibilitites for the first three numbers.

    I think you can now see what the total number of arrangements of all four numbers will be.

  • math -

    The Correct Answer is: 24 orders

  • math -

    Cher has forgotten the combination to her locker. She knows it consists of four numbers - 3, 5, 7, and 9 - but she can’t recall the order. She decides to try every possible order until she gets the right one. How many possible orders are there?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    1,6,3,7,9,4,5,7=17 only plus or minus can be out in between the numbers and they must stay in the order shown EX. 1-6+3-7+9-4+5+7=17 It must equal 17 Here's a hint. Add all the numbers up first, then see what number needs to be subtracted …
  2. math ,correction

    consider determining how many possible phone numbers are in an area code (repeated numbers allowed) is this a combination, permutation or neither.... my answer neither combination. combination. wouldn't it be neither because we are …
  3. Math 6th

    Imagine there are 1000 lockers and 1000 students at school. The 1st student who comes through the school opens every locker as they enter the school. The 2nd student walks in and closes every other locker begining with locker number …
  4. math

    My locker combination has three digits. None of the digits are zero. What is the probability that the first digit of my locker combination is less than 4?
  5. Math

    In the town of Niceville, a local lottery is held once a year for the residents. Lottery tickets cost 50 cents apiece. Each lottery ticket contains four numbers, from 1 to 20. The lottery machine will select six numbers from 1 to 20. …
  6. Math

    PLEASE HELP I DON'T KNOW WHAT TO DO D': I don't understand what to do or how to even start.... In the town of Niceville, a local lottery is held once a year for the residents. Lottery tickets cost 50 cents apiece. Each lottery ticket …
  7. Math

    My locker combination has three digits. None of the digits are 0. What is the probability that the first digit of my locker combination is less than 3?
  8. Math

    There are 10,000 lockers. One person opens all the lockers. The second person closes every 2 doors. The third person counts every three locker and does the opposite to the locker. (Open/close it.) The fourth person counts every fourth …
  9. Math

    There are 10,000 lockers. One person opens all the lockers. The second person closes every 2 doors. The third person counts every three locker and does the opposite to the locker. (Open/close it.) The fourth person counts every fourth …
  10. math

    Answer the following questions below that go with the following: Let's say that a locker combination lock uses numbers 0 through 39 for a 3 digit combination. 1.) Exactly how many combinations are possible if NO digit may be repeated?

More Similar Questions