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.

1,001.

A wire was shaped to form a square of area 81cm\(^2\). An equilateral triangle was formed by the same wire,What is the length of a side of the triangle formed?

A.

3cm

B.

6cm

C.

9cm

D.

12cm

E.

27cm

Correct answer is D

Area of a square = L X L = 81

: L = 9

Perimeter of square = 4 X L 

 4 X 9 = 36cm

An equilateral triangle with equal sides:

 36/3 = 12cm

1,002.

What is the total surface area of a cylinder with radius 2cm and height 1.5cm, correct to 2 significant figures?

A.

440cm\(^2\)

B.

220cm\(^2\)

C.

88cm\(^2\)

D.

44cm\(^2\)

E.

22cm\(^2\)

Correct answer is D

T.S.A of a cylinder = \(2\pi r (r + h)\)

= \(2 \times \frac{22}{7} \times 2 (2 + 1.5)\)

= 44 cm\(^2\)

1,003.

The probability that a student will pass a mathematics test is ⅗. If 3 students are chosen at random, what is the probability that at least 2 of them will pass the test?

A.

\(\frac{27}{125}\)

B.

\(\frac{9}{25}\)

C.

\(\frac{72}{125}\)

D.

\(\frac{76}{125}\)

E.

\(\frac{81}{125}\)

Correct answer is E

No explanation has been provided for this answer.

1,004.

If \(\frac{t}{1}\) = \(\sqrt{(\frac{4\pi^2}{g}})\), what is the value of g when I = 4.5; t = 5 secs

A.

3.20 ms2

B.

11.31 ms2

C.

32.00 ms2

D.

56.57 ms2

E.

160.00 ms2

Correct answer is C

No explanation has been provided for this answer.

1,005.

The angle of elevation of the top (T) of a palm tree from a point (R) on the ground is 30°. The distance from R to the base (B) of the palm tree is 120m. What is the distance between T and R?

A.

60m

B.

60\(\sqrt{3}\)m

C.

80\(\sqrt{3}\)m

D.

120\(\sqrt{3}\)m

E.

240m

Correct answer is C

No explanation has been provided for this answer.