Page 1 - WS

SAI INTERNATIONAL SCHOOL

Class X

Sub: Mathematics

Worksheet-5.2

Ch-5 Arithmetic Progression

th
1. The n term of an A.P. is given by a n = 3 + 4n. The common difference is
(a) 7
(b) 3
(c) 4
(d) 1

2. If p, q, r and s are in A.P. then r – q is
(a) s – p
(b) s – q
(c) s – r
(d) none of these
3. If the sum of three numbers in an A.P. is 9 and their product is 24, then numbers
are
(a) 2, 4, 6
(b) 1, 5, 3
(c) 2, 8, 4
(d) 2, 3, 4
th
4. The (n – 1) term of an A.P. is given by 7,12,17, 22,… is
(a) 5n + 2
(b) 5n + 3
(c) 5n – 5
(d) 5n – 3
5. Find the sum of 12 terms of an A.P. whose nth term is given by a n = 3n + 4
(a) 262
(b) 272
(c) 282
(d) 292
6. Write next two terms of given A.P. -3, -5, -7,-9......
7. The number of bacteria in a certain food item after each second forms an AP.
when they double in every second (T/F)

8. For the following arithmetic progressions write the first term a and the common
difference d:
(i) - 5, -1, 3, 7, .........
(ii) 1/5, 3/5, 5/5, 7/5, .........