Quiz Discussion

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

Course Name: Quantitative Aptitude

  • 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
No Solution Present Yet

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# Quiz
1
Discuss

The 4th and 7th term of an arithmetic progression are 11 and -4 respectively. What is the 15th term?

  • 1] -49
  • 2] -44
  • 3] -39
  • 4] -34
Solution
2
Discuss

What is the sum of the first 13 terms of an arithmetic progression if the first term is -10 and last term is 26?

  • 1] 104
  • 2] 140
  • 3] 84
  • 4] 98
Solution
3
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
4
Discuss

If the sum of p terms of an A.P. is q and the sum of q terms is p, then the sum of (p + q) terms will be

  • 1] 0
  • 2] p - q
  • 3] p + q
  • 4] -(p + q)
Solution
5
Discuss

The sum of first five multiples of 3 is:

 

  • 1]

    90

  • 2]

    72

  • 3]

    55

  • 4]

    45

Solution
6
Discuss

If the sum of n terms of an A.P. be 3n2 + n and its common difference is 6, then its first term is

  • 1] 2
  • 2] 3
  • 3] 1
  • 4] 4
Solution
7
Discuss

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

  • 1] 3 : 2
  • 2] 3 : 1
  • 3] 1 : 3
  • 4] 2 : 3
Solution
8
Discuss

A bacteria gives birth to two new bacteria in each second and the life span of each bacteria is 5 seconds. The process of the reproduction is continuous until the death of the bacteria. initially there is one newly born bacteria at time t = 0, the find the total number of live bacteria just after 10 seconds :

  • 1]

    \(\frac{{{3^{10}}}}{2}\)

  • 2]

    310 - 210

  • 3]

    243 × (35 -1)

  • 4]

    310 - 25

  • 5]

    None of these

Solution
9
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
10
Discuss

If three numbers be in G.P., then their logarithms will be in

  • 1]

    AP

  • 2]

    GP

  • 3]

    HP

  • 4]

     None Of This

Solution
# Quiz