Arithmetic Sequence Quiz

Find the nth term of the arithmetic sequence 3, 5, 7, 9,...?

• 2n + 1

• 2n + 2

• 4n + 1

• 4n + 2

Which term of the arithmetic sequence -3, -8, -13, -18, ... is -248?

• 50th

• 51st

• 52nd

• 53rd

Find the sum of the arithmetic sequence -3, -8, -13, -18, ..., -248?

• -6275

• -2675

• 2675

• 6275

Which of the following is an arithmetic sequence ?

• 1, 2, 3, 6, 12, ...

• -3, 3, -3, 3, -3, ...

• 2, 8, 14, 20, 26, ...

• 1, 2, 4, 6, 8, 16, ...

The fourth term of the arithmetic sequence whose first term is -20 and the common difference is 4 is ______?

• -8

• -2

• 2

• 8

What formula will you use if you want to find the nth term of an arithmetic sequence?

• a_{n =} a₁+ (n-1) d

• a_{1 =} a_n + (n-1) d

• (n-1) = a_n + a₁ + d

• (n-1) = d (a_n + a₁)

Find a₂₁ of an arithmetic sequence if a₁₉= -72 and d=7.

• -56

• -57

• -58

• -59

Which of the following is NOT an example of arithmetic sequence?

• 5, 18, 11, 14, ...

• 80, 75, 70, 65, ...

• π/2, π, 3π/2, 2π, ...

• -√2, 2√2, 4√2, 8√2, ...

What is the common difference of the given arithmetic sequence {3,6,9,12,15}?

• -3

• -2

• 2

• 3

There are 30 stairs leading up to your apartment building. Each stair has a height of 7 inches (constant difference). What is the total height you need to climb reach your apartment?

• 6,509

• 6,510

• 6,511

• 6,512