Odd Multiples of 5
Probability
Level
1
Consider a set which consists only of odd multiples of 5.
Which of the following is possibly the value of the greatest value in the set minus the least value in the set?
20
25
15
5
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1 solution
Range of a set is defined as the difference in the greatest and least value of said set. Each element of the set is an odd multiple of 5 , so it will end in 5 , guaranteed. The greatest element of the set will end in 5 , as will the least element, so the difference between them will end in 0 . The only option ending in 0 is 2 0 .