# Exam-Style Questions on Frequency Tree

## Problems on Frequency Tree adapted from questions set in previous exams.

### 1.

GCSE Foundation

180 pupils had some homework to do for the following day.

• 75 of these pupils are boys.
• 11 of the 180 pupils did not do their homework.
• 98 of the girls did do their homework.

(a) Use this information to complete the frequency tree.

(b) One of the girls is chosen at random. What is the probability that this girl did not do her homework?

### 2.

GCSE Foundation

The 37th Wolverhampton Sea Scouts make a game for a fund raising event.

Players can win money by picking a golden ticket from a pot.

A player chooses a pot by picking a green ball or an orange ball out of a bag.

The game is played 500 times altogether and the frequency tree shows some of the outcomes.

(a) Complete the frequency tree.

(b) A player has one go at the game. Use the frequency tree to estimate the probability that the player wins some money.

The Scouts make a profit of £350 from this game.

(c) Work out how much it costs players to have one go at this game.

The exam-style questions appearing on this site are based on those set in previous examinations (or sample assessment papers for future examinations) by the major examination boards. The wording, diagrams and figures used in these questions have been changed from the originals so that students can have fresh, relevant problem solving practice even if they have previously worked through the related exam paper.

The solutions to the questions on this website are only available to those who have a Transum Subscription.

Exam-Style Questions Main Page

Search for exam-style questions containing a particular word or phrase:

To search the entire Transum website use the search box in the grey area below.

Kausar Begum Khan, Kenya

Friday, January 26, 2018

"This is a fabulous website! I cannot thank you enough."

Tuesday, November 6, 2018

"Transum is so resourceful. The resources are so child-friendly that my students love its usage.It has a wide range of topics and caters to most of my needs. 'Thankyou" will be too small a word to express my gratitude to the content developers of this site."

Ahmed Jaja, Ghana

Thursday, November 22, 2018

"It was very useful for me.I recommend it to every math student.Thank you."

Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for those learning Mathematics anywhere in the world. Click here to enter your comments.

For Students:

For All: