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Question 2
A
\(\sqrt{2}\) 
B
\(\sqrt{5}\) 
C
2\(\sqrt{2}\) 
D
2\(\sqrt{5}\) 
Explanation.
Share Answer \(\frac{3\sqrt{5} \times 4\sqrt{6}}{2 \sqrt{2} \times 3\sqrt{2}}\)

= \(\frac{\sqrt{5} \times 2\sqrt{6}}{\sqrt{2} \times \sqrt{3}}\)

= \(\frac{\sqrt{5} \times 2 \sqrt{6}}{\sqrt{6}}\)

= 2\(\sqrt{5}\)

Correct Option:
D
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Question 3
A
50:11 
B
15:17 
C
13:55 
D
12:11 
Explanation.
Share Answer Divide cash enrollment by their common factors then the answer of each division gives the required ratio. i.e. x = \(\frac{1050}{70}\) = 15

and y = \(\frac{1190}{70}\) = 17

ratio of enrollment of x to y = 15:17

Correct Option:
B
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Question 5
A
30 
B
16 
C
-16 
D
-30 
Explanation.
Share Answer T4 = 5 + (4 - 1)2; where n = 4

= 5 + (3)2 = 5 + 9

= 14

T = 5 + (6 - 1)2

where n = 6

= 5 + (5)2

= 5 + 25 = 30

T4 + T6 = 14 - 30

= -16

Correct Option:
C
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Question 6
A
25m/s 
B
150m/s 
C
250m/s 
D
500m/s 
Explanation.
Share Answer \(\frac{720 \times 1000}{8 \times 60 \times 60}\) = \(\frac{20 \times 10}{8}\)

= \(\frac{200}{8}\)

= 25 m/s

Correct Option:
A
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Question 7
A
5% 
B
7\(\frac{1}{2}\)% 
C
8% 
D
10% 
Explanation.
Share Answer A = 3,500, P = N2,500

A = P + I

But I = N3,500 - N2,500

I = N1,000

I = \(\frac{PRT}{100}\)

N1,000 = \(\frac{2.500 \times R \times 4}{100}\)

1000 = 100R

R = \(\frac{1000}{100}\)

= 10%

Correct Option:
D
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Question 8
A
B
C
D
Explanation.
Share Answer \(\frac{1}{8} + \frac{2}{3x} = \frac{1}{3}\)

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

\(\frac{5}{3x} = \frac{1}{3}\)

3x = 15

x = \(\frac{15}{3}\)

= 5

Correct Option:
A
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Question 10
A
p = \(\frac{2q - rs}{6}\) 
B
p = 2qr - sr - 3 
C
p = \(\frac{2qr - s}{6}\) 
D
p = \(\frac{2qr - rs}{6}\) 
Explanation.
Share Answer q = \(\frac{3p}{r} + \frac{s}{2}\)

q = \(\frac{6p + rs}{2r}\)

6p + rs = 2qr

6p = 2qr - rs

p = \(\frac{2qr - rs}{6}\)

Correct Option:
D
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