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.

3,306.

The table above shows the scores of a group of 40 students in a physics test

What is the mean of the distribution?

A.

4.2

B.

4.5

C.

4.8

D.

5.0

E.

5.2

Correct answer is C

x 1 2 3 4 5 6 7 8 9 Total
f 2 3 6 7 9 6 2 2 3 40
fx 2 6 18 28 45 36 14 16 27 192

Mean = \(\frac{\sum fx}{\sum f}\)

= \(\frac{192}{40}\)

= 4.8

 

3,307.
3,308.

What is A∩B in the diagram above?

A.

(2,3)

B.

(2,3,4)

C.

(1,2,3)

D.

(2,3,8)

E.

(6,4,7)

Correct answer is B

No explanation has been provided for this answer.

3,309.

Find the median of the following set of numbers: 28, 29, 39, 38, 33, 37, 26, 20, 15, 25

A.

33

B.

29.5

C.

29

D.

28.5

E.

28

Correct answer is D

15, 20, 25, 26, 28, 29, 33, 37, 38, 39

median = \(\frac{28 + 29}{2}\)

= 28.5

3,310.

At a point 500m from the base of a water tank the angle of elevation of the top of the tank is 45o. Find the height of the tank.

A.

250m

B.

353m

C.

354m

D.

433m

E.

500m

Correct answer is E

\(\tan 45 = \frac{x}{500}\)

\(x = 500 \tan 45\)

= \(500 m\)