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Question (1)

QN0026566

Which of the following numbers is irrational?

(A) 0.75
(B) 7/9
(C) √18
(D) –5

Correct Answer: C

Explanation:

√18 = 3√2, which is irrational.

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Question (2)

QN0026567

A rational number between 2/5 and 3/5 is:

(A) 1/10
(B) 1/2
(C) 4/5
(D) 7/8

Correct Answer: B

Explanation:

1/2 = 0.5 lies between 0.4 and 0.6.

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Question (3)

QN0026568

Which decimal expansion is non-terminating and non-repeating?

(A) 0.272727…
(B) 0.125
(C) 0.1010010001…
(D) 0.666…

Correct Answer: C

Explanation:

Such decimals are irrational.

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Question (4)

QN0026569

Evaluate: (–3/4) + (5/8)

(A) –1/8
(B) 1/8
(C) –11/8
(D) 11/8

Correct Answer: A

Explanation:

–6/8 + 5/8 = –1/8

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Question (5)

QN0026570

Which of the following fractions has a terminating decimal expansion?

(A) 7/15
(B) 9/20
(C) 5/18
(D) 11/21

Correct Answer: B

Explanation:

9/20 = 0.45

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Question (6)

QN0026571

The multiplicative inverse of –7/11 is:

(A) 7/11
(B) –11/7
(C) 11/7
(D) –7

Correct Answer: B

Explanation:

Reciprocal of a/b is b/a.

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Question (7)

QN0026572

Which of the following is a perfect square?

(A) 98
(B) 121
(C) 145
(D) 242

Correct Answer: B

Explanation:

121 = 11²

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Question (8)

QN0026573

Evaluate: (5/6) ÷ (10/9)

(A) 3/4
(B) 4/3
(C) 5/9
(D) 9/5

Correct Answer: A

Explanation:

(5/6) × (9/10) = 45/60 = 3/4

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Question (9)

QN0026574

Which statement is true about irrational numbers?

(A) They can be expressed as p/q.
(B) Their decimal expansions terminate.
(C) Their decimal expansions are non-repeating.
(D) They are always negative.

Correct Answer: C

Explanation:

Irrational numbers are non-terminating and non-repeating.

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Question (10)

QN0026575

Which number lies between √9 and √25?

(A) √4
(B) √16
(C) √36
(D) √49

Correct Answer: B

Explanation:

√9 = 3 and √25 = 5, while √16 = 4.

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Question (1)

Which of the following numbers is irrational?

Explanation:

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Question (2)

A rational number between 2/5 and 3/5 is:

Explanation:

Link:

Question (3)

Which decimal expansion is non-terminating and non-repeating?

Explanation:

Link:

Question (4)

Evaluate: (–3/4) + (5/8)

Explanation:

Link:

Question (5)

Which of the following fractions has a terminating decimal expansion?

Explanation:

Link:

Question (6)

The multiplicative inverse of –7/11 is:

Explanation:

Link:

Question (7)

Which of the following is a perfect square?

Explanation:

Link:

Question (8)

Evaluate: (5/6) ÷ (10/9)

Explanation:

Link:

Question (9)

Which statement is true about irrational numbers?

Explanation:

Link:

Question (10)

Which number lies between √9 and √25?

Explanation:

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