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A FIVE DIGIT NUMBER IS FORMED BY USING THE DIGITS 1,2,3,4&5 WITH OUT R
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08 Oct 2010, 04:49
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A FIVE DIGIT NUMBER IS FORMED BY USING THE DIGITS 1,2,3,4&5 WITH OUT REPETITIONS . WHAT IS THE PROBABILITY THE NUMBER IS DIVISIBLE BY4? A) 1/5 B) 5/6 C) 4/5 D) 7/3 E) 2/7
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Re: A FIVE DIGIT NUMBER IS FORMED BY USING THE DIGITS 1,2,3,4&5 WITH OUT R
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08 Oct 2010, 05:15
anilnandyala wrote: A FIVE DIGIT NUMBER IS FORMED BY USING THE DIGITS 1,2,3,4&5 WITH OUT REPETITIONS . WHAT IS THE PROBABILITY THE NUMBER IS DIVISIBLE BY4?
A)1/5 B)5/6 C)4/5 D)7/3 E)2/7 P = Number of desired outcomes / number of possible outcomes Number of desired outcomes: To be divisible by 4, the number has to end with the last two digits forming a number divisible by 4. Given the numbers in the question this leaves us with: 12 24 32 52 For each of them I now have to put the remaining numbers in front: 3x2x1 > 6 combinations for each number set = 6x4 (we have 4 sets from above) = 24 Number of possible outcomes: The total number of possibilities to form a 5 digit number from the question= 5x4x3x2x1=120 P = 24/120 = 1/5 > A



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Re: A FIVE DIGIT NUMBER IS FORMED BY USING THE DIGITS 1,2,3,4&5 WITH OUT R
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08 Oct 2010, 10:00
It has to be A. (3!x4/5!) = 1/5
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Re: A FIVE DIGIT NUMBER IS FORMED BY USING THE DIGITS 1,2,3,4&5 WITH OUT R
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08 Oct 2010, 10:55
arundas wrote: It has to be A. (3!x4/5!) = 1/5 Please explain your process.
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Re: A FIVE DIGIT NUMBER IS FORMED BY USING THE DIGITS 1,2,3,4&5 WITH OUT R
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09 Oct 2010, 11:49
Baten80 wrote: arundas wrote: It has to be A. (3!x4/5!) = 1/5 Please explain your process. ***12 stars can be filled in 3! ways ***24 stars can be filled in 3! ways ***32 stars can be filled in 3! ways ***54 stars can be filled in 3! ways So total option multiple of 4 = 4*3! Total options = 5! So prob. = 4*3!/5!
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Re: A FIVE DIGIT NUMBER IS FORMED BY USING THE DIGITS 1,2,3,4&5 WITH OUT R
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10 Oct 2010, 03:07
the ans is 24/120 = 1/5



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Re: A FIVE DIGIT NUMBER IS FORMED BY USING THE DIGITS 1,2,3,4&5 WITH OUT R
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08 Jun 2016, 23:39
A 5digit number is formed by the numbers 1, 2, 3, 4 and 5, without repetition. What is the probability that the number formed is a multiple of 4 ? A) 1/4 B) 3/5 C) 2/5 D) 4/5 E) 1/5 Press +Kudos if you liked the post



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Re: A FIVE DIGIT NUMBER IS FORMED BY USING THE DIGITS 1,2,3,4&5 WITH OUT R
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09 Jun 2016, 00:06
Topic Merged. Rules for posting: rulesforpostingpleasereadthisbeforeposting133935.html#p1092822If a number is divisible by 4 the last 2 digits of the number has to be divisible by 4. If the number ends with 12: Number of possibilities = 3 * 2 * 1 = 6 number ends with 24: Possibilities = 3 * 2 * 1 = 6 number ends with 32: Possibilities = 6 number ends with 52: Possibilities = 6 Total number of possibilities with restriction = 6 + 6 + 6 + 6 = 24 Total number of possibilities without restriction = 5! = 120 Probability = 24/120 = 1/5 Answer: E



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Re: A FIVE DIGIT NUMBER IS FORMED BY USING THE DIGITS 1,2,3,4&5 WITH OUT R
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15 Jun 2019, 13:55
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Re: A FIVE DIGIT NUMBER IS FORMED BY USING THE DIGITS 1,2,3,4&5 WITH OUT R
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