WAEC Mathematics Past Questions & Answers - Page 248

1,236.

Convert 35 to a number in base two

A.

1011_two

B.

10011_two

C.

100011_two

D.

110010_two

E.

110001_two

View answer & explanation

Correct answer is C

No explanation has been provided for this answer.

1,237.

A bag contains 3 white, 6 red, 5 blue identical balls. A ball is picked at random from bag. What is the probability that is either white or blue?

A.

9/14

B.

4/7

C.

3/7

D.

5/14

E.

3/14

View answer & explanation

Correct answer is B

P(W or B) = 3/14 + 5/14 = 4/7

1,238.

What is the probability of having an odd number in a single throw of a fair die with the faces numbered 1,2,3,4,5,6?

A.

5/6

B.

2/3

C.

1/2

D.

1/3

E.

1/6

View answer & explanation

Correct answer is C

P(odd) = 3/6

= 1/2

1,239.

A bag contains red, black and green identical balls. A ball is picked and replaced. The table shows the result of 100 trials. Find the experimental probability of picking a green ball.

A.

16

B.

21/25

C.

1/3

D.

4/21

E.

4/25

View answer & explanation

Correct answer is E

Prob(green ball) = 16/100 = 4/25

1,240.

The graph is the cumulative frequency curve for the weight distribution of 100 workers in a factory. Which of the points P,Q,R,S and T indicates the median weight?

A.

T

B.

S

C.

R

D.

Q

E.

P

View answer & explanation

Correct answer is D

No explanation has been provided for this answer.

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