Arithmetic Sequence and Series

Arithmetic Sequence

100

What is the formula for Arithmetic Sequence

an=a1+(n-1)d

200

What is the common difference in 3, 11, 19, 27, 35,...? What is the 6th term?

8, 43

300

Find the next term in the sequence 7,15,23,31, ?

39

400

If an=10-2n, find a_5.

a1=10-2(1) =8 a2=10-2(2) =6 a3=10-2(3) =4 a4=10-2(4) =2 a5=10-2(5) =0

500

How many multiples of 4 lie between 10 and 250?

60

Arithmetic Progression

100

What is the formula for finding Sum of n terms of an AP?

Sn=n/2(a+a_n)

200

Determine the number of terms n in each arithmetic series. a1 =19, an =96, Sn =690

12

300

Determine the sum of terms in the given arithmetic series:

 a1 =42, an =146, n=14

1316

400

Determine the sum of terms in the arithmetic series. 10+12+14+16..., n=11

220

500

What is the common difference of an AP in which a₂₁-a₇ = 84?

6