EXTRA QUESTIONS CLASS X CH-5 ARITHMETIC PROGRESSION

(1 marks questions )

Q.1) Find the eleventh term from the last term of the AP

27,23,19,......-65.

Q.2) Which term of the AP 3,15,27,39..... will be 12 more than its 21st term.

Q.3) Find the value of the middle term of the following A.P. -6,-2,2....58.

Q.4) Find the 10th term from the end of the A.P. 4,9,14.....254.

Q.5) Which term of the A.P. 14,11,8......is -1.

Q.6) If 4/5,a,2 are three consecutive terms of the AP, find the value of a.

Q.7) Show that the sequence 3,6,9,12 is an AP . Find its 15th term and the general term.

Q.8) Find the sum of 1+(-2)+ (-5)+(-8)......+(-236).

Q.9) Is √3,√12,√27,√48.....form an AP . Justify your answer.

Q.10) What is the common difference of an AP in which a21-a7 = 84?

(2 marks questions)

Q.1) The first term of an AP is 5 and the last term is 45 and the sum of all its term is 400. Find the number of terms and the common difference of the AP.

Q.2) Yasmin saves 32rs during the first month,36rs in the second month and 40rs in the third month. If she continues to save in this manner in how many months money she saved will be 2000?

Q.3) A sum of 280$ is to be award four prizes. If each prize after the first is $20 less than the preceding prize, find the value of each of the prizes.

Q.4) The sum of first n terms of the AP is given by Sn=2(n)2+3n . Find the 16th term of the AP.

Q.5) If the nth term of an AP is (2n+1) , find the sum of first n terms of the AP.

Q.6) Which term of the AP 21,18,15 is 0?

Q.7) Find the sum of all the odd numbers between 0 and 50.

Q.8) Find the sum of the 11th terms of the AP, whose most middle term is 30.

Q.9) Find the 9th term from the end of the AP 5,9,13....185.

Q.10) Find the ratio of 10th term from beginning and 20th term from the end of the AP: 3,8,13.....253.