Sum of n terms of the series \(\sqrt 2 + \sqrt 8 + \sqrt {18} + \sqrt {32} + \) ....... is
\(\frac{{n\left( {n + 1} \right)}}{2}\)
\(2n\left( {n + 1} \right)\)
\(\frac{{n\left( {n + 1} \right)}}{{\sqrt 2 }}\)
1
Quiz Recommendation System API Link - https://fresherbell-quiz-api.herokuapp.com/fresherbell_quiz_api
# | Quiz |
---|---|
1
Discuss
|
The number of terms of the A.P. 3, 7, 11, 15, ....... to be taken so that the sum is 406 is
Solution |
2
Discuss
|
What is the sum of the first 9 terms of an arithmetic progression if the first term is 7 and last term is 55?
Solution |
3
Discuss
|
15th term of A.P., x - 7, x - 2, x + 3, ........ is
Solution |
4
Discuss
|
After striking the floor, a rubber ball rebounds to 4/5th of the height from which it has fallen. Find the total distance that it travels before coming to rest if it has been gently dropped from a height of 120 metres.
Solution |
5
Discuss
|
Which term of the A.P. 92, 88, 84, 80, ...... is 0?
Solution |
6
Discuss
|
Two A.P.’s have the same common difference. The first term of one of these is 8 and that of the other is 3. The difference between their 30th terms is
Solution |
7
Discuss
|
If four numbers in A.P. are such that their sum is 50 and the greatest number is 4 times the least, then the numbers are
Solution |
8
Discuss
|
If the first term of an A.P. is 2 and common difference is 4, then the sum of its 40 term is
Solution |
9
Discuss
|
If the nth term of an A.P. is 2n + 1, then the sum of first n terms of the A.P. is
Solution |
10
Discuss
|
The first and last term of an A.P. is a and l respectively. If S is the sum of all the terms of the A.P. and the common difference is given by \(\frac{{{l^2} - {a^2}}}{{k - \left( {l + a} \right)}}\) then k = ?
Solution |
# | Quiz |
Copyright © 2020 Inovatik - All rights reserved