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Question (21)

QN0010097

The AP 50, 45, 40, 35, … has:

(A) positive common difference
(B) zero common difference
(C) negative common difference
(D) no common difference

Correct Answer: C

Explanation:

Common difference is –5.

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Question (22)

QN0010098

If the first term of an AP is –7 and the common difference is 6, then the 8th term is:

(A) 29
(B) 31
(C) 33
(D) 35

Correct Answer: D

Explanation:

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Question (23)

QN0010099

A staircase has steps increasing by 2 cm in height successively. This pattern forms:

(A) a geometric progression
(B) an arithmetic progression
(C) a square sequence
(D) a triangular sequence

Correct Answer: B

Explanation:

Equal increase forms an AP.

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Question (24)

QN0010100

Find the value of if the nth term of the AP 6, 11, 16, 21, … is 101.

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

Correct Answer: C

Explanation:

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Question (25)

QN0010101

The AP –10, –6, –2, 2, … is:

(A) increasing
(B) decreasing
(C) constant
(D) non-linear

Correct Answer: A

Explanation:

Terms increase by 4.

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Question (26)

QN0010102

Which of the following situations represents an AP?

(A) Population doubling every year
(B) Savings increasing by ₹500 every month
(C) Area of squares with increasing side lengths
(D) Bacteria tripling every hour

Correct Answer: B

Explanation:

Equal increase every month forms an AP.

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Question (27)

QN0010103

The 30th term of the AP 2, 5, 8, 11, … is:

(A) 86
(B) 87
(C) 88
(D) 89

Correct Answer: D

Explanation:

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