Arithmetic Series

What is the arithmetic means between x and x+12

• x + 2

• x+ 3

• x+4

• x+6

Insert two arithmetic means between 50 and 62.

• 52,54

• 54,58

• 56,58

• 58,60

The arithmetic mean between two terms in an arithmetic sequence is 42. If one term is 30, what is the other term?

• 50

• 52

• 54

• 56

Insert three arithmetic means between -37 and -17.

• -32,-27,-22

• -30.-25,-27

• -25,-27,-29

• -20,-24,-26

Find the sum of the first 30 even integers.

• 920

• 930

• 940

• 950

What is the sum of 40+50+60....S₁₀ ^?

• 750

• 850

• 900

• 950

What is the sum of 4+8+12+16+…........S₈?

• 140

• 142

• 143

• 144

What is the sum of 7+9+11+13....S₁₂^?

• 216

• 218

• 219

• 220

A club collect P20 the first week, P30 the second week, and so on, increasing P10 each week for 25 weeks. How much is the fund after 25 weeks?

• P 3,000

• P 3,200

• P 3,500

• P 3, 600

A conference hall has 28 rows of seats, The last row contains 98 seats. If each row has two fewer seats than the row behind, how many seats are there in the first row?

• 40

• 42

• 43

• 44