Waec Mathematics Past Questions and Answers

Question 1251:

• WAEC 2009

If a positive integer, list the values of x which satisfy the equation 3x - 4 < 6 and x - 1 > 0

A. {1, 2, 3}
B. {2, 3}
C. {2, 3, 4}
D. {2, 3, 4, 5}

Question 1252:

• WAEC 2009

If c and k are the roots of 6 - x - x² = 0, find c + k

A. 2
B. 1
C. -1
D. -3

Question 1253:

• WAEC 2009

Each of the interior angles of a regular polygon is 140^o. Calculate the sum of all the interior angles of the polygon

A. 1080^o
B. 1260^o
C. 1800^o
D. 2160^o

Question 1254:

• WAEC 2009

A bucket holds 10 litres of water. How many buckets of water will fill a reservoir of size 8m x 7m x 5m.(1 litre = 1000cm³)`

A. 28
B. 280
C. 2800
D. 28000

Question 1255:

• WAEC 2009

A box contains black, white and red identical balls. The probability of picking a black ball at random from the box is \(\frac{3}{10}\) and the probability of picking a white ball at random is \(\frac{2}{5}\). If there are 30 balls in the box, how many of them are red?

A. 3
B. 7
C. 9
D. 12