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Question (11)

QN008999

Which expression represents linear decay?

(A) h=3+2t
(B) y=5x 2
(C) v=100−4t
(D) p=t 3 +1

Correct Answer: C

Explanation:

Value decreases at a constant rate.

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Question (12)

QN009000

In the expression 10x−x 2 , the degree is:

(A) 1
(B) 0
(C) 2
(D) 3

Correct Answer: C

Explanation:

Highest power of x is 2.

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Question (13)

QN009001

Find the degree of the polynomial 2x 2 −5x+3.

(A) 0
(B) 1
(C) 2
(D) 3

Correct Answer: C

Explanation:

Highest power of x is 2.

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Question (14)

QN009002

What is the coefficient of x 2 in x 4 −3x 3 +6x 2 −2x+7?

(A) –3
(B) 6
(C) –2
(D) 7

Correct Answer: B

Explanation:

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Question (15)

QN009003

What is the value of the polynomial 5x−3 when x=2?

(A) 5
(B) 7
(C) 10
(D) 13

Correct Answer: B

Explanation:

5(2)−3=7

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Question (16)

QN009004

Evaluate 7s 2 −4s+6 when s=−3.

(A) 57
(B) 69
(C) 81
(D) 75

Correct Answer: C

Explanation:

7(9)+12+6=81

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Question (17)

QN009005

The perimeter of a square is represented by 4x. What is the perimeter when the side is 3.5 cm?

(A) 7 cm
(B) 10.5 cm
(C) 12 cm
(D) 14 cm

Correct Answer: D

Explanation:

4×3.5=14

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Question (18)

QN009006

A chess club charges ₹200 joining fee and ₹50 per match. What is the total amount for 8 matches?

(A) ₹400
(B) ₹500
(C) ₹600
(D) ₹700

Correct Answer: C

Explanation:

200+50×8=600

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Question (19)

QN009007

If a player paid ₹750 in the chess club scheme, how many matches did he play?

(A) 9
(B) 10
(C) 11
(D) 12

Correct Answer: C

Explanation:

200+50m=750⇒m=11

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Question (20)

QN009008

The sum of two numbers is 64. One number is 10 more than the other. The smaller number is:

(A) 17
(B) 27
(C) 32
(D) 37

Correct Answer: B

Explanation:

Let smaller number be x. Then x+x+10=64

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