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28 Jul 2022, 04:15
Kudos
Bookmarks
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
86% (00:43) correct
14%
(00:40)
wrong
based on 116
sessions
History
Date
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Not Attempted Yet
What is the sum of all the even numbers bigger than (-10) and smaller than 12?
A. 2.
B. 10.
C. 0.
D. 8.
E. 4.
A. 2.
B. 10.
C. 0.
D. 8.
E. 4.
28 Jul 2022, 05:04
Kudos
Bookmarks
Even numbers bigger than -10 will form an AP with the first term as -8, a common difference of 2 and the last term as 10.
Let the last term be the nth term.
10 = -8 + 2*(n-1)
2*n - 2 = 18
n = 10
And the sum of the 10 terms = (10/2)*(-8+10)
Sum = 10
Thus, the correct option is B.
Let the last term be the nth term.
10 = -8 + 2*(n-1)
2*n - 2 = 18
n = 10
And the sum of the 10 terms = (10/2)*(-8+10)
Sum = 10
Thus, the correct option is B.
11 Jan 2025, 09:45
Kudos
Bookmarks
Its asking sum of even number from -8 to 10. Everything will cancel out leaving 10 as the result
Bunuel
What is the sum of all the even numbers bigger than (-10) and smaller than 12?
A. 2.
B. 10.
C. 0.
D. 8.
E. 4.
A. 2.
B. 10.
C. 0.
D. 8.
E. 4.
