GCSE 1MA1 - Hannahs Sweets - Solutions - Hannah chooses...

Hannah chooses chocolates from a box of two different
The probability that she chooses a crème tangerine
Probability : Hannah ' s Sweets
Hannah chooses two chocolates
( a ) Complete the probability tree diagram
types .
is 0 . 7
.
.
First choice
S econd choice
- crème tangerine
0 . 7
_ crème tangerine <
0 . 7
0 . 7
0 : 3 .
-
monte limar
- crème tangerine
0 : )
monte lim ar
0 : 3
montelimar
Introduction
( b ) Work out the probability that she chooses two different types of chocolate .
The question about Hannah s sweets is probably the most famous GCSE maths question ever and now Hannah
can ' t stop eating sweets . Help her out before she loses all her teeth .
Information
P ( MC ) = 0 . 3 2007 = 0 . 21
The marks for individual questions are shown in round brackets : e . g . ( 2 ) .
There are 11 questions in this booklet .
The total mark is 45 .
Calculators may be used in all questions .
PICM = 0 . 780 - 720 - 21
Ad v ice
Show all stages in any calculations . Work steadily through the paper . Do not spend too long on one recipe . If you
cannot answer a question , leave it and attempt the next one . Return at the end to those you have left out .
0 . 42