MATHEMATICS | Study Mode

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Question 1
A

2211

B

2121

C

1212

D

1122

Explanation

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Correct option: D
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Question 2
A

10103

B

11003

C

10003

D

10013

Explanation

Explanation not provided, please join discuss, your contributions are welcomed


Correct option: C
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Question 3
A
24
B
16
C
38
D
36
Explanation

The sum, S of ratio is S = 5 + 3 + 2 = 10.

But highest share = \(\frac{5}{10} \times T\), where T is the total number of apples.

Thus, \(40 = \frac{5}{10} \times T\),

given 40 x 10 = 5T,

\(T = \frac{40 \times 10}{5} = 80\)

Hence the smallest share = \(\frac{2}{10} \times 80\)

= 16 apples


Correct option: B
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Question 4
A

6.2

B

6.3

C

0.5

D

0.6

Explanation

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Correct option: D
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Question 5
A

3 years

B

3\(\frac{1}{2}\) years

C

1\(\frac{1}{2}\) years

D

2\(\frac{1}{2}\) years.

Explanation

Using \(S.I =\frac{P \times T \times R}{100}\)

 

\(600 =\frac{3000 \times T \times 8}{100}\)

 

\(T =\frac{600 \times 100}{3000 \times 8}\)

 

\(\frac{20}{8}\)

 

= 2\(\frac{1}{2}\) years


Correct option: D
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Question 6
A

33

B

35

C

3

D

32

Explanation

\(\frac{3^{-5n}}{9^{1-n}} \times 27^{n + 1}\)

 

\(\frac{3^{-5n}}{3^{2(1-n)}} \times 3^{3(n + 1)}\)

 

\(3^{-5n} \div 3^{2(1-n)} \times 3^{3(n + 1)}\)

 

 

\(3^{-5n - 2(1-n) + 3(n + 1)}\)

 

 

\(3^{-5n - 2 + 2n + 3n + 3}\)

 

\(3^{-5n + 5n + 3 - 2}\)

 

\(3^{1}\)

 

= 3


Correct option: C
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Question 7
A

0.9021

B

1.8063

C

0.2007

D

0.3011

Explanation

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Correct option: C
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Question 8
A

1/5

B

1/9

C

9

D

5

Explanation

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Correct option: D
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Question 9
A

.

MATHEMATICS A 9 image
B

.

MATHEMATICS B 9 image
C

.

MATHEMATICS C 9 image
D

.

MATHEMATICS D 9 image
Explanation

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Correct option: C
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Question 10
A

{3,5,11,13,17,19}

B

{3,5,7,9,11,13,15,17,19}

C

{2,3,5,7,11,13,17,19}

D

{3,5,7,11,17,19}

Explanation

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Correct option: B

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