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.

306.

In the diagram, \(\overline{MN}\)//\(\overline{PQ}\), < MNP = 2x, and < NPQ = (3x - 50)°. Find the value of < NPQ 

A.

200\(^o\)

B.

100\(^o\)

C.

120\(^o\)

D.

90\(^o\)

Correct answer is B

 

2x = 3x - 50 alternate angle 

50\(^o\) = 3x - 2x 

50\(^o\) = x 

< NPQ = (3x - 50)\(^o\) 

= 3(500)\(^o\) - 50 

= 150 - 50 = 100\(^o\) 

307.

Each interior angle of a regular polygon is 168\(^o\). Find the number of sides of the polygon 

A.

30

B.

36

C.

24

D.

18

Correct answer is A

Exterior angle = 180\(^o\) - 168\(^o\)

Number of sides = \(\frac{360^o}{12}\)

= 30\(^o\)

308.

The dimension of a rectangular base of a right pyramid is 9 cm by 5cm. If the volume of the pyramid is 105 cm\(^3\), how high is the pyramid? 

A.

10cm

B.

6cm

C.

8cm

D.

7cm

Correct answer is D

Volume = \(\frac{1}{3}\) x 9 x 5 x h

105 = \(\frac{1}{3}\) x 9 x 5 x h

\(\frac{105}{15} = \frac{15h}{15}\)

h = 7cm 

309.

If tan y is positive and sin y is negative, in which quadrant would y lie? 

A.

First and third only

B.

First and second only

C.

Third only

D.

Second only

Correct answer is C

No explanation has been provided for this answer.

310.

Fati buys milk at ₦x per tin sells each at a profit of ₦y. If she sells 10 tins of milk, how much does she receives from the sales?

A.

₦(xy + 10)

B.

₦(x + 10y)

C.

₦(10x + y)

D.

₦10(x + y)

Correct answer is D

Selling Price for each = ₦x + ₦y 

= 10(₦x + ₦y)