|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
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:
87% (00:46) correct
13%
(00:40)
wrong
based on 127
sessions
History
Date
Time
Result
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
