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NCERT Mathematics Class 10 Exemplar Ch 5 Arithmetic Progressions Part 1
EXERCISE 5.1
1. In an AP, if , then a is
(A) 6
(B) 7
(C) 20
(D) 28
Answer: D
2. In an AP, if , , , then a will be
(A) 0
(B) 3.5
(C) 103.5
(D) 104.5
Answer: B
3. The list of numbers β¦ is
(A) an AP with
(B) an AP with d = 4
(C) an AP with
(D) not an AP
Answer: B
4. The 11th term of the AP: , β¦ is
(A) β 20
(B) 20
(C) β 30
(D) 30
Answer: B
5. The first four terms of an AP, whose first term is β 2 and the common difference is β 2, are
(A)
(B)
(C)
(D)
Answer: C
6. The 21st term of the AP whose first two terms are β 3 and 4 is
(A) 17
(B) 137
(C) 143
(D) β 143
Answer: B
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
Answer: B
8. Which term of the β¦ is 210?
(A) 9th
(B) 10th
(C) 11th
(D) 12th
Answer: B
9. If the common difference of an AP is 5, then what is ?
(A) 5
(B) 20
(C) 25
(D) 30
Answer: C
10. What is the common difference of an AP in which ?
(A) 8
(B) β 8
(C) β 4
(D) 4
Answer: A