Arithmetic Progression

A list of numbers -10, -6, -2, 2 is _________

• an A.P with d = -16
• an A.P with d = 4
• an A.P with d = -4
• Not an A.P

What is the first positive term of the sequence:  -9, -5, -1, .......

• 5
• 4
• 3
• 1

2019^th term of an AP is written as

• a + 2018d

• a + (2019 + 1) d

• 2018 d

• 2a + 2018 d

The next term of an AP  $\sqrt{7}$  , $\sqrt{28}$  , $\sqrt{63}$  ,......is 

•  $\sqrt{70}$  

•  $\sqrt{84}$  

•  $\sqrt{98}$  

•  $\sqrt{112}$  

The 5^th term of an AP is -3 and its common difference is -4. The sum of its first 10 terms is_________

• 50

• -50

• 30

• -30

The common difference of the AP  $\frac{1}{p}$ , $\frac{1-p}{p}$  , $\frac{1-2p}{p}$  ........is

• p

• -p

• -1

• 1

The sum of first 20 odd natural numbers is

• 100

• 210

• 400

• 420

The sum of first 'n' terms of an AP is (3n² + 6n). The common difference of the AP is ______

• 6

• 9

• 15

• -3

What is the formula for the  $n^{th}$  term of the AP   $\frac{2}{3},\ 1,\ \frac{4}{3},\ ...$  

•  $T_n=\frac{1}{3}\left(n-1\right)$  

•  $T_n=\frac{1}{3}\left(n+1\right)$  

•  $T_n=\frac{2}{3}\left(n+1\right)$  

•  $T_n=\frac{2}{3}\left(n-1\right)$  

If 7 times the 7^th term of an AP is equal to 11 times its 11^th term, then its 18^th term will be

• 7

• 11

• 18

• 0