11th Class Mathematics Chapter 6 Sequences and Series Preparation Online Test

The next term of the sequence-1, 2, 12, 40, .........is:

• 112 A
• 212 B
• 144 C
• none D

Fifth term of the sequence 2, 6, 11, 17.

• 24 A
• 41 B
• 32 C

Zero cannot be a term of:

• A.P and G.P A
• G.P and H.P B
• A.P and H.P C
• only H.P D

Which number cannot be a term of a geometric sequence ?

• 0 A
• 1 B
• -1 C
• r D

The sum of 10 A.Ms between 3 and 47 is:

• 50 A
• 250 B
• 100 C
• 500 D

If S is the H.M between 2 and b then b = :

• -10 A
• 10 B
• 7 C
• 5 D

G.M between -2i and 8i is:

• 4 or -4 A
• 4i or -4i B
• 2 or -2 C
• none D

Sequences are also called:

• Series A
• Progressions B
• Means C
• Convergence D

If a_n-3 = 2n - 5 then a_n =

• 2n-1 A
• 2n+1 B
• 2n+3 C
• none D

If there are six G.Ms between 3 and 284 then G₄ =

• 24 A
• 48 B
• 12 C
• 6 D

A geometric series is convergent only if:

• | r | > 1 A
• | r | < 1 B
• | r | = 1 C
• none of these D

A sequence is denoted by:

• 
  A
• {a_n} B
• a_n C
• a₁ + (n-1) d D

If a_n = (n + 1) a_n-1, a₁ = 1, second term of the sequence is:

• 3 A
• 1 B
• 2 C
• 4 D

• A.P A
• G.P B
• H.P C
• none D

What is the next term in the sequence 10, 7, 4, 1...........?

• 2 A
• -2 B
• -3 C
• none of these D

The next term of the sequence 1, 6, 20, 56, ........ is:

• 112 A
• 144 B
• 212 C
• none D

What is the common difference of the sequence 11, 5, -1, ......... ?

• 6 A
• -6 B
• 
  C
• none of the foregoing numbers D

Arithmetic series is only possible if:

• |d| = 1 A
• |d| < 1 B
• |d| > 1 C
• none D

The series 2 + 2 + 2 ..... is:

• divergent A
• convergent B
• oscillatory C
• none of these D

An infinite sequence has no:

• nth term A
• last term B
• sum C
• none D