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)
B)
C)
D)
E)	Choose the correct choice from the following answers: A) 1/5 B) 5/6 C) 4/5 D) 7/3 E) 2/7
FOLLOW SEND PM   Re: A FIVE DIGIT NUMBER IS FORMED BY USING THE DIGITS 1,2,3,4&amp;5 WITH OUT R [#permalink] Post 08 Oct 2010, 05:15   Bookmark   this post   anilnandyala wrote:   A FIVE DIGIT NUMBER IS FORMED BY USING THE DIGITS 1,2,3,4&amp;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 --&gt; 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 --&gt; 1/5
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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)
B)
C)
D)
E)