WAEC Past Questions and Answers - Page 4087

20,431.

Simplify: \(\frac{3}{4} \div 1\frac{1}{4} \times (1\frac{1}{2} - \frac{2}{3})\)

A.

7/30

B.

7/24

C.

9/25

D.

1/2

E.

18/25

Correct answer is D

\(\frac{3}{4} \div 1\frac{1}{4} \times (1\frac{1}{2} - \frac{2}{3})\)

\(\frac{3}{4} \div \frac{5}{4} \times (\frac{9 - 4}{6})\)

= \(\frac{3}{4} \times \frac{4}{5} \times \frac{5}{6}\)

= \(\frac{1}{2}\)

20,432.

S = {1, 2, 3, 4, 5, 6}, T = {2,4,5,7} and R = {1,4, 5}, and (S∩T) ∪ R

A.

{1, 4, 5}

B.

{2, 4, 5}

C.

{1, 2, 4, 5}

D.

{2, 3, 4, 5}

E.

{1, 2, 3, 4, 5}

Correct answer is C

S = {1, 2, 3, 4, 5, 6};  T = {2, 4, 5, 7}; R = {1, 4, 5}

(S∩T) ∪ R = {2, 4, 5}  ∪ {1, 4, 5}

= {1, 2, 4, 5}