Question 1

Find the probability that a number is selected at random from 40 to 50 is a prime number?

Accepted Answer

0.27272

Question 2

If two fair coins are tossed, what is the probability of getting atleast one head?

Accepted Answer

3/4

Question 3

Convert 241 in base 5 to base 8

Accepted Answer

1078

Answer

2418

Answer

1768

Answer

718

Question 4

Add 10111₂, 1101₂, 111₂

Accepted Answer

1010112

Answer

110111

Answer

1010101010

Answer

12211

Question 5

Find the value of Sin^-1(0.5)

Accepted Answer

300

Answer

500

Answer

800

Answer

450

Answer

900

Question 6

Round up 69500 to 2 significant figures

Accepted Answer

70000

Answer

60000

Answer

69000

Answer

80000

Question 7

A ship sails due east at a speed of 15 knots. What is the bearing in degrees?

Accepted Answer

900

Answer

450

Answer

1200

Answer

600

Question 8

Okeke walks due west for 4km. He then changes direction and walks on a bearing of 197⁰until he is southwest of his starting point. How far is he from the starting point?

Accepted Answer

8.2

Question 9

Vincent is twice as old as Susan. If Vincent is 40 years old, how old is Susan?

Accepted Answer

20

Question 10

A solid cylinder of radius 3cm has a total surface area of 36 $\pi$ . Find its length.

Accepted Answer

3cm

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