Correct Answer: A. noble gas

Correct Answer: B. 192

Explanation

\(S_{n} = \frac{n}{2}(2a + (n - 1)d)\) ( for an arithmetic progression)

\(S_{3} = 18 = \frac{3}{2}(2(4) + (3 - 1) d) \)

\(18 = \frac{3}{2} (8 + 2d)\)

\(18 = 12 + 3d \implies 3d = 6\)

\(d = 2\)

\(\therefore T_{1} = 4 \implies T_{2} = 4 + 2 = 6; T_{3} = 6 + 2 = 8\)

Their product = \(4 \times 6 \times 8 = 192\)

Correct Answer: A. healing

Correct Answer: B. the sky is cloudless

Correct Answer: C. 9

Explanation

I = \(\frac{PRT}{100}\)

where r = r% p.a; I = 0.36p

0.36p = \(\frac{P \times r \times 4}{100}\)

\(\frac{0.36 \times 100}{4}\) = r

r = 9

Explanation

(a)Change in quantity demanded is any movement along the same demand curve, whether downwards or upwards. A downward movement along the demand curve signifies an increase in the quantity demanded when the price is reduced, while upward movement signifies a decrease in the quantity demanded when the price is raised. This is illustrated below. From the diagram, when the price increase to p\(_2\), there is - contraction in quantity demanded to Q\(_1\). When the price falls to P\(_1\), the quantity demanded increase to Q\(_2\). Price is the only factor that brings that change in the quantity demanded while other factors are held constant.

Correct Answer: A. indemnity insurance

Correct Answer: D) sulphur

Correct Answer: D. infuriated

Explanation

(a) Es = \(\frac{% change in quantity supplied}{% change in price}\)

% change in quantity = \(\frac{\Delta q}{q}\) x 100

= \(\frac{150 -100}{100}\) x 100

= \(\frac{50}{100}\) x 100

= 50%

% change in price = \(\frac{\Delta P}{P}\) x 100

= \(\frac{40-30}{30}\) x 100

= \(\frac{10}{30}\) x 100

= 33.3%

Es = \(\frac{50%}{33.3%}\) = 1.5

(b) The supply of rice is elastic. The coefficient of price elasticity of supply is greater than 1

(c) Factors that can cause an increase in the supplyof rice:

(i) Improvement in technology

(ii) Favourable weather condition

(iii) Increase in the number of producers or importers of rice.

(iv) Reduction in taxation which stimulates production or Importation of rice.

(v) Fall in the prices of of other commodities

(vi) Increase in subsidies

(vii) Reduction in the price of inputs