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02 Aug 2025, 01:28
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
(N/A)
Question Stats:
75% (00:41) correct
25% (00:10) wrong based on 4 sessions
History
Date
Time
Result
Not Attempted Yet
The sum of all the integers m such that \(0 ≤ m ≤ 10\) is
(A) 45
(B) 50
(C) 55
(D) 60
(E) 65
(A) 45
(B) 50
(C) 55
(D) 60
(E) 65
Updated on: 16 Aug 2025, 02:09
Originally posted by Sajjad1994 on 16 Aug 2025, 02:09.
Last edited by Sajjad1994 on 16 Aug 2025, 02:09, edited 1 time in total.
Last edited by Sajjad1994 on 16 Aug 2025, 02:09, edited 1 time in total.
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Explanation
List the integers in the range:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Use the formula for the sum of the first nn integers:
The sum of the first n positive integers is given by:
Sum\(=\frac{n(n+1)}{2}\)
Here, the largest integer is 10, so n=10.
Calculate the sum:
Sum=\(\frac{10×11}{2}=\frac{110}{2}=55\)
Answer: C
List the integers in the range:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Use the formula for the sum of the first nn integers:
The sum of the first n positive integers is given by:
Sum\(=\frac{n(n+1)}{2}\)
Here, the largest integer is 10, so n=10.
Calculate the sum:
Sum=\(\frac{10×11}{2}=\frac{110}{2}=55\)
Answer: C
