Arithmetic Progression

Choose the correct choice in the following and justify:(i) 30th term of the AP: 10, 7, 4, …, is

• (a) 97

• (b) 77

• (c) -77

• (d) -87

Choose the correct answer from the given four options:
In an AP, if d = –4, n = 7, a_n = 4, then a is

• 6
• 7
• 20
• 28

Choose the correct answer from the given four options:
In an AP, if a = 3.5, d = 0, n =101 ,then a_n will be 

• 0
• 3.5
• -3.5
• 1

Choose the correct answer from the given four options:
In an AP if a = –7.2, d = 3.6, a_n = 7.2, then n

• 2
• 3
• 4
• 5

Choose the correct answer from the given four options:
The 21st term of the AP whose first two terms are –3 and 4 is

• 17
• 137
• -137
• 127

Which term of the AP: 21, 42, 63, 84,... is 210?

• 9^th
• 10^th
• 11^th
• 12^th 

If the common difference of an AP is 5, then what is a₁₈ – a₁₃ ?

• 5
• 15
• 25
• 10

If the 2nd term of an AP is 13 and the 5th term is 25, the common difference is 

• 12
• 4
• 3
• 5

The 4th term from the end of the AP: –11, –8, –5, ..., 49 is 

•  37 
• 40
• 43
• 58

If the first term of an AP is –5 and the common difference is 2, then the sum of the first 6 terms is

• 0
• 5
• 6
• 15