The area of the trapezium ABCD above is

The state symbol for a solution in water is:

The average of a set of numbers reduces from 14 to 11 when the number 35 is removed. How many numbers were in the original set?

A store charges 15% VAT on all sales. What is the total cost of a TV set marked at $300 ?

Which one of the following is NOT a receptor in the body?

The system used by mission control in Houston, Texas to monitor the operation of space exploration vehicles is an example of the __________ processing mode.

A current of 2 mA is flowing through a wire. How long will it take for 6 coulombs of charge to pass?

Which of the following BRST describes the Organization of Eastern Caribbean States (O.E.C.S.)?

How much simple interest is due on a loan of $240 for two years if the annual rate of interest is 4 per cent?

The following statements refer to the laminated core of a transformer. Which one of them is NOT true?

The table shows the distribution of the ages of 25 students.

What is the probability that a student chosen at random is AT LEAST 13 years old?

Which of the following statements about diffusion is NOT true?

If p * q = pq² , then 2 * 3 =

Items bought by a trader for $80 are sold for $100. The profit expressed as a percentage of cost price is

A detector close to a sample of radioactive material records 76 counts per second (cps). Precisely 2 days later the count rate has fallen to 22 cps.The count rate due to background radiation, taken immediately before and after the experiment, averaged 4 cps. The half-life of the material is:

The number of litres in 2000 cm³ is:

The second most common gas in the atmosphere is:

A flame test colour of red could indicate the presence of a compound of:

The two common varieties of chlorine atoms are called:

0.0039 × 10^-2 in scientific notation is