Waec Mathematics Past Questions

Question 21

Each interior angle of a regular polygon is 108°. How many sides has it?

waec 2004

• A. 5
• B. 7
• C. 9
• D. 14

Question 22

Find the next two terms of the sequence

1, 5, 14, 30, 55, ...

waec 2004

• A. 61,110
• B. 67,116
• C. 81,140
• D. 91, 140

Question 23

lf \(log_q p= r\), express p in terms of q and r

waec 2004

• A. p =qr
• B. p =r^q
• C. \(p = \frac{r}{q}\)
• D. p=q^r

Question 24

Given that ξ = {1, 2, 3, . . . . . . ,10}, P= (x : x is prime) and Q = {y : y is odd}, find P^l∩Q

waec 2004

• A. {2}
• B. {1,9}
• C. {315.7}
• D. {4, 6, 8, 10}

Question 25

Find the sum of the roots of the equation 2x² + 3x - 9 = 0

waec 2004

• A. -18
• B. -6
• C. \(-\frac{9}{2}\)
• D. \(-\frac{3}{2}\)