JAMB Mathematics Past Questions & Answers - Page 73

361.

In the diagram, GI is a tangent to the circle at H. If EF||GI, calculate the size of ∠EHF

A.

126°

B.

72°

C.

54°

D.

28°

Correct answer is B

No explanation has been provided for this answer.

362.

A car uses one litre of petrol for every 14km. If one litre of petrol cost N63.00, how far can the car go with N900.00 worth of petrol?

A.

420Km

B.

405Km

C.

210Km

D.

200Km

Correct answer is D

since 1litre cost ₦63

  So ₦900 is the cost of \(\frac{900}{63}\) litres

  = 14.2857litres of petrol

nbsp; The car uses 1 litre for 14km

  So 14.2857 litres will be used for (14.2857 x 14)

  = 200km

  Answer is D

363.

A boy walks 800m in 20 minutes. Calculate his average speed in Km/H

A.

2.4

B.

4

C.

24

D.

6

Correct answer is A

No explanation has been provided for this answer.

365.

The table shown gives the marks scored by a group of student in a test. Use the table to answer the question given.

Mark 0 1 2 3 4 5
Frequency 1 2 7 5 4 3

 

What is the median mark?

A.

1

B.

2

C.

3

D.

4

Correct answer is C

Total frequency = 1 + 2 + 7 + 5 + 4 + 3 = 22

  Median is the middle number

 = \(\frac{Nth}{2}\)

  term = \(\frac{22th}{2}\) = 11th term

  Going in ascending order, 11th term is 3, going in descending order 11th term is 3

  Median = 3 + \(\frac{3}{2}\) = \(\frac{6}{2}\) = 3

  Answer is C