The normal price of a television is £1200. It is reduced to £970. Work out the percentage reduction.
Four numbers have a mean of 10. The median is 8. Two of the numbers are 1 and 5. Work out the other two numbers.
Bag A has 2 black counters and 3 white counters.
Bag B has 3 orange counters and 4 green counters.
A counter is chosen at random from each bag. What is the probability of choosing a black counter and an orange counter? (Multiple correct answers)
42 out of 80 animals are dogs. What percentage of the animals are dogs?
There were 17 million families in the UK in 2006. The mean number of children per family was 1.8. How many children were there in the UK?
One combination is soup and curry. How many different combinations are there?
The sections of a fair spinner are red, white or blue. The spinner is spun 40 times. Write down the relative frequency of the spinner landing on red.
Here are two events:
1. A ticket wins the National Lottery.
2. A fair coin lands on heads five times in a row.
The probability of A happening is 7.15 × \(10\,^-8\)
How many more times likely is B than A?
4.5 x \(10\,^1\)
4.4 x \(10\,^5\)
5.4 x \(10\,^2\)
One of the balls is dropped from a height of 2 metres. Each time the ball bounces it reaches – of its previous height.
How high will the ball reach after two bounces?
A company makes 400 Christmas toys. Each toy costs £4.70 to make. One-quarter of the toys are given away to a children’s home. Three-fifths of the rest are sold for the full price of £12. The remainder are sold at half price.
How much profit does the company make?