Quiz Discussion

If the first term of an A.P. is 2 and common difference is 4, then the sum of its 40 term is

Course Name: Quantitative Aptitude

  • 1] 3200
  • 2] 1600
  • 3] 200
  • 4] 2800
Solution
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# Quiz
1
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
2
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

  • 1] 5, 10, 15, 20
  • 2] 4, 10, 16, 22
  • 3] 3, 7, 11, 15
  • 4] None of these
Solution
3
Discuss

Find the first term of an AP whose 8th and 12th terms are respectively 39 and 59.

  • 1] 5
  • 2] 6
  • 3] 4
  • 4] 3
  • 5] 7
Solution
4
Discuss

The 3rd and 6th term of an arithmetic progression are 13 and -5 respectively. What is the 11th term?

  • 1] -29
  • 2] -41
  • 3] -47
  • 4] -35
Solution
5
Discuss

For A.P. T18 - T8 = ........ ?

  • 1] d
  • 2] 10d
  • 3] 26d
  • 4] 2d
Solution
6
Discuss

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

  • 1] 23
  • 2] 32
  • 3] 22
  • 4] 24
Solution
7
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
8
Discuss

If S1 is the sum of an arithmetic progression of ‘n’ odd number of terms and S2 is the sum of the terms of the series in odd places, then \(\frac{{{S_1}}}{{{S_2}}}\)

 

  • 1]

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

  • 2]

    \(\frac{n}{{n + 1}}\)

  • 3]

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

  • 4]

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

Solution
9
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.

  • 1] 540 m
  • 2] 960 m
  • 3] 1080 m
  • 4] 1020 m
  • 5] 1120 m
Solution
10
Discuss

Find the nth term of the following sequence :

  • 1]

    5(10n - 1)

  • 2]

    5n(10n - 1)

  • 3]

    \(\frac{5}{9} \times \left( {{{10}^n} - 1} \right)\)

  • 4]

    \({\left( {\frac{5}{9}} \right)^n} \times \left( {{{10}^n} - 1} \right)\)

Solution
# Quiz