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The average of all the consecutive integers from a to b incl
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09 Mar 2019, 12:22
09 Mar 2019, 12:22
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Question Stats:
66% (01:39) correct
33% (01:49) wrong based on 84 sessions
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The average of all the consecutive integers from a to b inclusive is 39. Which of the following could be a and b?
Indicate all such integers.
A. 4 and 74
B. 19 and 39
C. 25 and 53
D. 29 and 59
E. 33 and 45
Indicate all such integers.
A. 4 and 74
B. 19 and 39
C. 25 and 53
D. 29 and 59
E. 33 and 45
Re: The average of all the consecutive integers from a to b incl
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17 Mar 2019, 18:53
17 Mar 2019, 18:53
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With consecutive integers, the average of all the numbers will be the same as the average of the first and last numbers (also the same as the average of the second and second to last, third and third to last, and so on).
So we just need two numbers whose average is 39, or whose sum is 78. A, C, and E satisfy this condition.
So we just need two numbers whose average is 39, or whose sum is 78. A, C, and E satisfy this condition.
Re: The average of all the consecutive integers from a to b incl
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06 Jan 2022, 09:40
06 Jan 2022, 09:40
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