Quiz Discussion

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

Course Name: Quantitative Aptitude

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

A piece of equipment cost a certain factory 6,00,000. If it depreciates in value, 15% the first year, 13.5% the next year, 12% the third year, and so on, what will be its value at the end of 10 years, all percentages applying to the original cost?

  • 1] Rs. 2,00,000
  • 2] Rs. 1,05,000
  • 3] Rs. 4,05,000
  • 4] Rs. 6,50,000
Solution
3
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
4
Discuss

What is the sum of all 3 digit numbers that leave a remainder of '2' when divided by 3?

  • 1]

    897

  • 2]

    1,64,850

  • 3]

    1,64,749

  • 4]

    1,49,700

Solution
5
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
6
Discuss

What is the sum of the first 12 terms of an arithmetic progression if the first term is -19 and last term is 36?

  • 1] 192
  • 2] 230
  • 3] 102
  • 4] 214
Solution
7
Discuss

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

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

If the nth term of an A.P. is 2n + 1, then the sum of first n terms of the A.P. is

  • 1] n(n - 2)
  • 2] n(n + 2)
  • 3] n(n + 1)
  • 4] n(n - 1)
Solution
9
Discuss

The sum of first five multiples of 3 is:

  • 1] 45
  • 2] 65
  • 3] 75
  • 4] 90
Solution
10
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
# Quiz