The Venn diagram shows the number of people who like tea (T) and who like coffee (C).

Set T= 53

Union = 5

Set C = 47

Outside = 15

A person is selected at random, what is the probability that:

They like tea? (Answer was "120")

Only like coffee? (Answer "120")

A person who likes coffee is selected, what is the probability that:

they like tea too? (Answer "52")

they only like coffee? (Answer "58")

This was copied word-for-word, this is the exact question, it was Grade 6-7 GSCE Revision on MyMaths, and it gave the format to write as a Fraction only.

HOW DO I GET THAT? I swear you can only do Decimals, Fractions and Percentages for CONDITIONAL PROBABILITY, how do I get those answers?

Set T= 53

Union = 5

Set C = 47

Outside = 15

A person is selected at random, what is the probability that:

They like tea? (Answer was "120")

Only like coffee? (Answer "120")

A person who likes coffee is selected, what is the probability that:

they like tea too? (Answer "52")

they only like coffee? (Answer "58")

This was copied word-for-word, this is the exact question, it was Grade 6-7 GSCE Revision on MyMaths, and it gave the format to write as a Fraction only.

HOW DO I GET THAT? I swear you can only do Decimals, Fractions and Percentages for CONDITIONAL PROBABILITY, how do I get those answers?

I can't, it was a MyMaths question, and I closed that tab ages ago, it never generates the same question again.

However, I copied it word for word

However, I copied it word for word

Original post by Ozymandias007

I can't, it was a MyMaths question, and I closed that tab ages ago, it never generates the same question again.

However, I copied it word for word

However, I copied it word for word

The answers looked wrong, and from your description I cant say whether #T=53 or #T=53+5. I suspect the laltter, but youd have to draw the venn diagram as you remember it and upload it and your working if you want it checked.

(edited 11 months ago)

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