Curioustab
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Home
»
Aptitude
»
Numbers
(112 + 122 + 132 + ... + 202) =?
385
2485
2870
3255
Correct Answer:
2485
Explanation:
(11
2
+ 12
2
+ 13
2
+ ... + 20
2
) = (1
2
+ 2
2
+ 3
2
+ ... + 20
2
) - (1
2
+ 2
2
+ 3
2
+ ... + 10
2
)
[
Ref:
(1
2
+ 2
2
+ 3
2
+ ... +
n
2
) =
1
n
(
n
+ 1)(2
n
+ 1)
]
6
=
❨
20 x 21 x 41
-
10 x 11 x 21
❩
6
6
= (2870 - 385)
= 2485.
← Previous Question
Next Question→
More Questions from
Numbers
What will be remainder when 17200 is divided by 18?
Which of the following numbers will completely divide (325 + 326 + 327 + 328)?
(489 + 375)2 - (489 - 375)2 =? (489 x 375)
On dividing a number by 56, we get 29 as remainder. On dividing the same number by 8, what will be the remainder?
Which one of the following is the common factor of (4743 + 4343) and (4747 + 4347)?
If the number 517*324 is completely divisible by 3, then the smallest whole number in the place of * will be:
Which of the following is a prime number?
The difference between a positive proper fraction and its reciprocal is 9/20. The fraction is:
-84 x 29 + 365 =?
It is being given that (232 + 1) is completely divisible by a whole number. Which of the following numbers is completely divisible by this number?
Discussion & Comments
No comments yet. Be the first to comment!
Name:
Comment:
Post Comment
Join Discussion
Discussion & Comments