Quiz Discussion

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?

Course Name: Quantitative Aptitude

  • 1] 220
  • 2] 220 -1
  • 3] 219 -1
  • 4] 219
  • 5] None of these
Solution
No Solution Present Yet

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# Quiz
1
Discuss

The 7th and 12th term of an arithmetic progression are -15 and 5 respectively. What is the 16th term?

  • 1] 25
  • 2] 29
  • 3] 21
  • 4] 33
Solution
2
Discuss

Find the nth term of the following sequence :
5 + 55 + 555 + . . . . Tn

  • 1]

     

    5(10n - 1) 

  • 2]

     

    5n(10n - 1)

  • 3]

    5/9×(10n−1)

       

  • 4]

    (5/9)n×(10n−1)

Solution
3
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
4
Discuss

If k, 2k – 1 and 2k + 1 are three consecutive terms of an AP, the value of k is

 

  • 1]

    -2

  • 2]

    -3

  • 3]

    2

  • 4]

    3

Solution
5
Discuss

The sum of the first 16 terms of an AP whose first term and third term are 5 and 15 respectively is

  • 1] 600
  • 2] 765
  • 3] 640
  • 4] 680
  • 5] 690
Solution
6
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 = ?

 

  • 1] S
  • 2] 2S
  • 3] 3S
  • 4] None of these
Solution
7
Discuss

If k, 2k – 1 and 2k + 1 are three consecutive terms of an AP, the value of k is

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

If sum of n terms of an A.P. is 3n2 + 5n and Tm = 164 then m =

  • 1]

    26

  • 2]

    27

  • 3]

    28

  • 4]

    None Of This

Solution
9
Discuss

The 3rd and 9th term of an arithmetic progression are -8 and 10 respectively. What is the 16th term?

  • 1] 34
  • 2] 28
  • 3] 25
  • 4] 31
Solution
10
Discuss

If an A.P. has a = 1, tn = 20 and sn = 399, then value of n is :

  • 1] 20
  • 2] 32
  • 3] 38
  • 4] 40
Solution
# Quiz