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Question (1)

QN0026646

Which of the following sequences is both an arithmetic progression and a geometric progression?

(A) 2, 4, 6, 8, …
(B) 3, 3, 3, 3, …
(C) 1, 2, 4, 8, …
(D) 5, 10, 15, 20, …

Correct Answer: B

Explanation:

Constant sequence has common difference 0 and common ratio 1.

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Question (2)

QN0026647

Find the 12th term of the AP 5, 9, 13, 17, …

(A) 45
(B) 47
(C) 49
(D) 51

Correct Answer: C

Explanation:

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Question (3)

QN0026648

The common ratio of the GP 243, 81, 27, 9, … is:

(A)
(B) 3
(C) –3
(D)

Correct Answer: A

Explanation:

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Question (4)

QN0026649

The sum of the first 16 natural numbers is:

(A) 120
(B) 128
(C) 136
(D) 144

Correct Answer: C

Explanation:

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Question (5)

QN0026650

Which of the following is NOT an arithmetic progression?

(A) 7, 11, 15, 19, …
(B) 12, 9, 6, 3, …
(C) 2, 5, 10, 17, …
(D) –4, –1, 2, 5, …

Correct Answer: C

Explanation:

Differences are not equal.

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Question (6)

QN0026651

Find the 6th term of the GP 1, 4, 16, 64, …

(A) 256
(B) 512
(C) 1024
(D) 4096

Correct Answer: C

Explanation:

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Question (7)

QN0026652

If the sum of the first natural numbers is 210, then equals:

(A) 18
(B) 19
(C) 20
(D) 21

Correct Answer: C

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Question (8)

QN0026653

In an AP, if the first term is 18 and the common difference is –2, then the 8th term is:

(A) 2
(B) 4
(C) 6
(D) 8

Correct Answer: B

Explanation:

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Question (9)

QN0026654

Which situation represents a geometric progression?

(A) Salary increasing by ₹1000 yearly
(B) Number of cells doubling every hour
(C) Stair heights increasing equally
(D) Consecutive page numbers in a notebook

Correct Answer: B

Explanation:

Doubling forms a GP.

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Question (10)

QN0026655

Find the common difference of the AP: 31, 27, 23, 19, …

(A) –2
(B) –3
(C) –4
(D) –5

Correct Answer: C

Explanation:

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Question (1)

Which of the following sequences is both an arithmetic progression and a geometric progression?

Explanation:

Link:

Question (2)

Find the 12th term of the AP 5, 9, 13, 17, …

Explanation:

Link:

Question (3)

The common ratio of the GP 243, 81, 27, 9, … is:

Explanation:

Link:

Question (4)

The sum of the first 16 natural numbers is:

Explanation:

Link:

Question (5)

Which of the following is NOT an arithmetic progression?

Explanation:

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Question (6)

Find the 6th term of the GP 1, 4, 16, 64, …

Explanation:

Link:

Question (7)

If the sum of the first natural numbers is 210, then equals:

Explanation:

Link:

Question (8)

In an AP, if the first term is 18 and the common difference is –2, then the 8th term is:

Explanation:

Link:

Question (9)

Which situation represents a geometric progression?

Explanation:

Link:

Question (10)

Find the common difference of the AP: 31, 27, 23, 19, …

Explanation:

Link:

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