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Question (11)

QN0018450

Simplify 9⁻³ ÷ 9⁻⁵.

(A) 9⁻⁸
(B) 9²
(C) 9⁻²
(D) 9⁸

Correct Answer: B

Explanation:

−3 − (−5) = 2.

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Question (12)

QN0018451

What is the value of 10⁻⁴?

(A) 0.0001
(B) 0.001
(C) 0.01
(D) 10000

Correct Answer: A

Explanation:

10⁻⁴ = 1/10000.

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Question (13)

QN0018452

Which expression is equivalent to 8⁻²?

(A) 1/64
(B) 64
(C) 1/16
(D) 16

Correct Answer: A

Explanation:

8⁻² = 1/64.

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Question (14)

QN0018453

Simplify p⁶ × p⁻⁹.

(A) p¹⁵
(B) p⁻¹⁵
(C) p⁻³
(D) p³

Correct Answer: C

Explanation:

6 + (−9) = −3.

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Question (15)

QN0018454

What is the value of 2⁻⁵?

(A) 1/32
(B) 32
(C) 1/16
(D) 64

Correct Answer: A

Explanation:

2⁻⁵ = 1/32.

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Question (16)

QN0018455

Simplify 10⁻³ × 10⁻².

(A) 10⁻¹
(B) 10⁻⁵
(C) 10⁵
(D) 10⁻⁶

Correct Answer: B

Explanation:

−3 + (−2) = −5.

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Question (17)

QN0018456

Which of the following is equal to (−7)⁻²?

(A) −1/49
(B) 1/49
(C) −49
(D) 49

Correct Answer: B

Explanation:

Even power makes the denominator positive.

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Question (18)

QN0018457

Simplify a⁻⁸ ÷ a⁻³.

(A) a⁻¹¹
(B) a⁻⁵
(C) a⁵
(D) a¹¹

Correct Answer: B

Explanation:

−8 − (−3) = −5.

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Question (19)

QN0018458

What is the value of 100⁻¹?

(A) 100
(B) 1/100
(C) 1/10
(D) 0

Correct Answer: B

Explanation:

100⁻¹ = 1/100.

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Question (20)

QN0018459

Simplify 5⁻⁷ × 5⁷.

(A) 0
(B) 1
(C) 5
(D) 25

Correct Answer: B

Explanation:

Exponents add to 0, so value = 1.

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