Given that the universal set U={14,15,16,17,18,19,20}, J ={16,19,20} and K= {14,15,18}, find (J' ∩ K')1.

A. {17}

B. {16, 17, 19, 20}

C. {1, 4, 15, 17, 18}

D. {14, 15, 16, 18, 19, 20}

E. {14, 15, 16, 17, 18, 19, 20}

Evaluate 1.25 × 10\(^2\) × 0.125 × 10\(^3\) × 12.5 × 10\(^{-4}\) leaving your answer in standard form

A. 1.995 × 10³

B. 1.95 × 10²

C. 1.95 × 10¹

D. 1.95 × 10^-2

E. 1.95 × 10^-3

What is the volume of a cube if the diagonal of one of the sides is \(\sqrt{50}\)cm?

A. 7.07cm\(^3\)

B. 50.0cm\(^3\)

C. 125.0cm\(^3\)

D. 353.4cm\(^3\)

E. 625.0cm\(^3\)

A cone was developed from a sector of a circle with radius10cm and an angle at the centre of 108°. What is the radius of the cone?

A. 9.0cm

B. 8.5cm

C. 7.2cm

D. 4.3cm

E. 3.0cm

If , sT = \(\sqrt{\frac{[(a + T)T]}{a}}\) what does T equal?

A. T = (a²s² – 1)

B. T = (a²s²– 1) ÷ a

C. T = a ÷ (a² - s²)

D. T = a ÷ (a²s² – 1)

E. T = (as – 1)²

What is the total surface area of a cuboid whose dimensions are 12cm × 8cm × 3cm?

A. 312cm\(^2\)

B. 96cm\(^2\)

C. 36cm\(^2\)

D. 24cm\(^2\)

E. 12cm\(^2\)

If sin 30° = 0.5, what is the cosine of its complement?

A. -0.866

B. -0.5

C. 0.0.5

D. 0.866

E. 1