ARITHMETIC PROGRESSIONS

The Common difference of the A.P whose general term is  $a_n$  = 2n + 1 is

• 1

• 2

•  $-1$  

•  $-2$  

The number of terms in the A.P 2,5,8,...........59 is

• 12

• 19

• 20

• 25

The first positive term of the A.P  $-11,\ -8,\ -5\ ,\ ...........$  is

•  $-2$  

• 1

•  $-4$  

• 3

The 4th term from the end of the A.P ........,2,5,8,........,35 is

• 29

• 26

• 23

• 20

The 11th and 13th terms of an A.P 35 and 41 respectively its common difference is

• 38

• 32

• 6

• 3

The next term of the A.P  $\sqrt{8}\ ,\ \sqrt{18},\ \sqrt{32}............\ is$  

•  $5\sqrt{2}$  

•  $5\sqrt{3}$  

•  $3\sqrt{3}$  

•  $4\sqrt{3}$  

Which of the following is not an A.P?

• 1 , 4 , 7, .............

• $-5,-2,\ 1,\ 4..............$

• 3, 7, 12, 18...............

• 11, 14,17, 20...............

The sum of first 20 odd natural numbers is

• 281

• 285

• 400

• 421

The sum of first 10 multiples of 7 is

• 315

• 371

• 385

• 406

If the sum of the A.P 3, 7, 11, 15..........is 210, the number of terms is

• 10

• 12

• 15

• 22