Mathematics, 14.11.2019 17:31 louiecampos

Nicole has a machine that will produce a number from 1 through 50 when she pushes a button. p(multiple of 10)? a. p(not 100)? b. p( not multiple of 4) ? c. p( one digit number)?

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Nicole has a machine that will produce a number from 1 through 50 when she pushes a button. p(multiple of 10)? A. p(not 100)? B. p( not multiple of 4) ? C. p( one digit number)?
a) the possibilities that the number will be a multiple of 10 are:
  favorable cases: 5 (there are 5 numbers that are multiples of 10 from 1 to 50: 10, 20, 30, 40, 50)
possible cases: 50 (there are 50 numbers from 1 to 50)
possibilities that the number will be a multiple of 10: $\frac{5}{50}$ ⁽₅ = $\frac{1}{10}$

there are 10% that the number which will be produced after Nicole will push the button will be a multiple of 10

b)  the possibilities that the number won't be 100
favorable cases = 50 (no number from 1 to 50 is 100)
possible cases = 50 (there are 50 from 1 to 50)
possibilities that the number won't be 100: $\frac{50}{50}$ ⁽⁵⁰ = $\frac{1}{1}$

there are 100% that the number which will be produced after Nicole will push the button won't be 100

c)  the possibilities that the number won't be a multiple of 4
favorable cases: 50 - 12 = 38 (12 numbers from 1 to 50 are multiples of 4)
possible cases: 50
possibilities that the number won't a multiple of 4: $\frac{38}{50}$

there are 76% that the number which will be produced after Nicole will push the button won't be a multiple of 4 d)  the possibilities that the number will be an one digit number
   favorable cases: 9 (there are 9 one digit numbers from 1 to 50) possible cases: 50 (there are 50 numbers from 1 to 50)   possibilities that the number will be an one digit number: $\frac{9}{50}$
there are 18% that the number which will be produced after Nicole will push the button will be an one digit number

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Answer from: Quest

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