NCERT Mathematics Class 10 Exemplar Ch 5 Arithmetic Progressions Part 1

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EXERCISE 5.1

1. In an AP, if , then a is

(A) 6 (B) 7

(C) 20 (D) 28

2. In an AP, if , , , then a will be

(A) 0 (B) 3.5

(C) 103.5 (D) 104.5

3. The list of numbers ... is

(A) an AP with (B) an AP with d = 4

(C) an AP with (D) not an AP

4. The 11th term of the AP: , ...is

(A) –20 (B) 20

(C) –30 (D) 30

5. The first four terms of an AP, whose first term is –2 and the common difference is –2, are

(A) (B)

(C) (D)

6. The 21st term of the AP whose first two terms are –3 and 4 is

(A) 17 (B) 137

(C) 143 (D) –143

7. If the 2nd term of an AP is 13 and the 5th term is 25, what is its 7th term?

(A) 30 (B) 33

(C) 37 (D) 38

8. Which term of the ... is 210?

(A) 9th (B) 10th

(C) 11th (D) 12th

9. If the common difference of an AP is 5, then what is ?

(A) 5 (B) 20

(C) 25 (D) 30