Mathematics questions and answers

Mathematics Questions and Answers

How good are you with figures and formulas? Find out with these Mathematics past questions and answers. This Test is useful for both job aptitude test candidates and students preparing for JAMB, WAEC, NECO or Post UTME.

3,301.

What is the probability that an integer selected from the set of integers (20, 21, ...., 30) is a prime number?

A.

2/11

B.

5/11

C.

6/11

D.

9/11

E.

2/3

Correct answer is A

S = {20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30}

n(S) = 11

P = {23, 29}

n(P) = 2

Prob(P) = \(\frac{2}{11}\)

3,302.

How many students scored less than 7 marks?

A.

9

B.

15

C.

18

D.

21

E.

25

Correct answer is B

= 2 + 4 + 3 + 6

= 15 students scored less than 7 marks.

3,303.

How many student took the examination

A.

18

B.

20

C.

21

D.

23

E.

24

Correct answer is E

= 2 + 4 + 3 + 6 + 6 + 2 + 1

= 24 students

3,305.

Find the median of the set of numbers 12, 15, 13, 14, 12, 12.

A.

12

B.

12.5

C.

13

D.

13.5

E.

14

Correct answer is B

12, 12, 12, 13, 14, 15

Median = \(\frac{12 + 13}{2}\)

= 12.5