Quiz Discussion

If 18th and 11th term of an A.P. are in the ratio 3 : 2, then its 21st and 5th terms are in the ratio

Course Name: Quantitative Aptitude

  • 1] 3 : 2
  • 2] 3 : 1
  • 3] 1 : 3
  • 4] 2 : 3
Solution
No Solution Present Yet

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# Quiz
1
Discuss

Which term of the A.P. 92, 88, 84, 80, ...... is 0?

  • 1] 23
  • 2] 32
  • 3] 22
  • 4] 24
Solution
2
Discuss

The nth term of an A.P., the sum of whose n terms is Sn, is

  • 1] Sn + Sn - 1
  • 2] Sn - Sn - 1
  • 3] Sn + Sn + 1
  • 4] Sn - Sn + 1
Solution
3
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
4
Discuss

If a, b, c are in A.P., then (a – c)2/ (b2 – ac) =

  • 1]

    3

  • 2]

    4

  • 3]

    1

  • 4]

    2

Solution
5
Discuss

The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?

  • 1] 56
  • 2] 65
  • 3] 59
  • 4] 62
Solution
6
Discuss

The 3rd and 7th term of an arithmetic progression are -9 and 11 respectively. What is the 15th term?

  • 1] 28
  • 2] 87
  • 3] 51
  • 4] 17
Solution
7
Discuss

If a + 1, 2a + 1, 4a - 1 are in A.P., then the value of a is:

 

  • 1]

    1

  • 2]

    2

  • 3]

    3

  • 4]

    4

Solution
8
Discuss

What is the sum of the following series? -64, -66, -68, ......, -100

  • 1] -1458
  • 2] -1558
  • 3] -1568
  • 4] -1664
Solution
9
Discuss

The common difference of the A.P. \(\frac{1}{3}, \frac{{1 - 3b}}{3} , \frac{{1 - 6b}}{3}\)   . . . . . . is

 

  • 1]

    \(\frac{1}{3}\)

  • 2]

    \( - \frac{1}{3}\)

  • 3]

    -b

  • 4]

    b

Solution
10
Discuss

What is the sum of the first 12 terms of an arithmetic progression if the 3rd term is -13 and the 6th term is -4?

  • 1]

    -30

  • 2]

    41

  • 3]

    -23

  • 4]

    -34

Solution
# Quiz