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Question (21)

QN0010124

Find the 8th term of the GP 1, 2, 4, 8, …

(A) 64
(B) 128
(C) 256
(D) 512

Correct Answer: B

Explanation:

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Question (22)

QN0010125

The sequence 100, 50, 25, 12.5, … is a GP because:

(A) terms increase equally
(B) consecutive terms differ by 50
(C) consecutive terms have equal ratio
(D) terms are squared

Correct Answer: C

Explanation:

Common ratio is .

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Question (23)

QN0010126

If and , then the 4th term of the GP is:

(A) 54
(B) 81
(C) 162
(D) 243

Correct Answer: C

Explanation:

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Question (24)

QN0010127

A bacteria colony triples every hour. This pattern forms:

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

Correct Answer: B

Explanation:

Multiplication by a fixed number forms a GP.

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Question (25)

QN0010128

Which term of the GP 2, 10, 50, 250, … is 6250?

(A) 4th
(B) 5th
(C) 6th
(D) 7th

Correct Answer: C

Explanation:

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Question (26)

QN0010129

The GP has common ratio:

(A) 2
(B)
(C)
(D)

Correct Answer: B

Explanation:

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Question (27)

QN0010130

Which of the following cannot represent a GP?

(A) 1, 3, 9, 27
(B) 16, 8, 4, 2
(C) 5, 15, 45, 90
(D) 2, 6, 18, 54

Correct Answer: C

Explanation:

Ratios are not equal throughout.

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Question (28)

QN0010131

Find the 9th term of the GP 3, 6, 12, 24, …

(A) 384
(B) 512
(C) 768
(D) 1024

Correct Answer: C

Explanation:

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