Quiz Discussion

What is the sum of the first 9 terms of an arithmetic progression if the first term is 7 and last term is 55?

Course Name: Quantitative Aptitude

  • 1] 219
  • 2] 279
  • 3] 231
  • 4] 137
Solution
No Solution Present Yet

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# Quiz
1
Discuss

The 2nd and 8th term of an arithmetic progression are 17 and -1 respectively. What is the 14th term?

  • 1]

    -19

  • 2]

    -22

  • 3]

    -20

  • 4]

    -25

Solution
2
Discuss

If the 7th term of a H.P. is 1/10 and the 12th term is 1/25, then the 20th term is

  • 1]

    1/41

  • 2]

    1/45

  • 3]

    1/49

  • 4]

    1/37

Solution
3
Discuss

If the sum of n terms of an A.P. is 3n2 + 5n then which of its terms is 164 ?

  • 1] 26th
  • 2] 27th
  • 3] 28th
  • 4] None of these
Solution
4
Discuss

Consider an infinite G.P. with first term a and common ratio r, its sum is 4 and the second term is 3/4, then

  • 1]

    a = 7/4, r = 3/7

  • 2]

    a = 2, r = 3/8

  • 3]

    a = 3, r = 1/4

  • 4]

    a = 3/2, r = ½

Solution
5
Discuss

(1) + (1 + 1) + (1 + 1 + 1) + ....... + (1 + 1 + 1 + ...... n - 1 times) = ......

  • 1]

    \(\frac{{n\left( {n + 1} \right)}}{2}\)

  • 2]

    \(\frac{{n\left( {n - 1} \right)}}{2}\)

  • 3]

    \({n^2}\)

  • 4]

    n

Solution
6
Discuss

The sum of the first four terms of an A.P. is 56. The sum of the last four terms is 112. If its first term is 11, the number of terms is

  • 1]

    10

  • 2]

    11

  • 3]

    12

  • 4]

    13

Solution
7
Discuss

If Sn denote the sum of the first n terms of an A.P. If S2n = 3Sn , then S3n : Sn is equal to

  • 1] 4
  • 2] 6
  • 3] 8
  • 4] 10
Solution
8
Discuss

15th term of A.P., x - 7, x - 2, x + 3, ........ is

  • 1] x + 63
  • 2] x + 73
  • 3] x + 83
  • 4] x + 53
Solution
9
Discuss

What is the sum of the first 17 terms of an arithmetic progression if the first term is -20 and last term is 28?

  • 1] 68
  • 2] 156
  • 3] 142
  • 4] 242
Solution
10
Discuss

A boy agrees to work at the rate of one rupee on the first day, two rupees on the second day, and four rupees on third day and so on. How much will the boy get if he started working on the 1st of February and finishes on the 20th of February?

  • 1] 220
  • 2] 220 -1
  • 3] 219 -1
  • 4] 219
  • 5] None of these
Solution
# Quiz