The sum of the first 15 multiples of 8 is
  • 920
  • 860
  • 900
  • 960
Next term of the AP √2, 3√2, 5√2, ....... is
  • 2√7
  • 6√2
  • 9√2
  • 7√2
First four terms of the sequence an = 2n + 3 are
  • 3, 5, 7, 9
  • 5, 7, 9, 11
  • 5, 8, 11, 14
  • 1, 3, 5, 7
20th term of the AP -5, -3, -1, 1, is
  • 33
  • 30
  • 20
  • 25
If nth term of an AP is 7 - 4n, then its common difference is
  • 4
  • -4
  • 3
  • 11
If the sum of first n terms of an AP is An + Bn² where A and B are constants. The common difference of AP will be
  • A + B
  • A - B
  • 2A
  • 2B
The 10th term of the sequence √3, \(\sqrt{12}\), \(\sqrt{27}\); ...... is
  • \(\sqrt{243}\)
  • \(\sqrt{300}\)
  • \(\sqrt{363}\)
  • 432
Sum of n terms of the series
  • \(\frac{n(n+2)}{√2}\)
  • √2 n(n+1)
  • \(\frac{n(n+1)}{√2}\)
  • 1
If p - 1, p + 3, 3p - 1 are in AP, then p is equal to
  • 4
  • -4
  • 2
  • -2
The sum of the first 2n terms of the AP: 2, 5, 8, .... is equal to sum of the first n terms of the AP: 57, 59, 61, ... then n is equal to.
  • 10
  • 11
  • 12
  • 13
If the sum of the first m terms of an AP is n and the sum of its n terms is m, then the sum of its (m + n) terms will be
  • m + n
  • -(m + n)
  • m - n
  • 0
If nth term of an AP is given by fn = 3n + 4, find the common difference of the AP
  • 3
  • 2
  • 4
  • 7
The sum of first ten natural number is
  • 55
  • 155
  • 65
  • 110
Find the 15th term of an AP -2, -5, -8, ....
  • 70
  • -44
  • 72
  • 64
The 6th term from the end of the AP: 5, 2, -1, -4, ...., -31, is
  • -25
  • -22
  • -19
  • -16
Which term of the AP: 27, 24, 21, ......... is zero?
  • 8th
  • 10th
  • 9th
  • 11th
The sum of first n terms of the series a, 3a, 5a, ........ is
  • na
  • (2n - 1) a
  • n²a
  • n²a²
37th term of the AP: √x, 3√x, 5√x, ........ is
  • 37 √x
  • 39 √x
  • 73 √x
  • 75 √x
Which term of the AP: 92, 88, 84, 80 ... is 0?
  • 23
  • 32
  • 22
  • 24
The common difference of the AP ... -4, -2, 0, 2, .... is
  • 2
  • -2
  • \(\frac{1}{2}\)
  • -\(\frac{1}{2}\)
0 h : 0 m : 1 s

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