Arrangements

Set 1

100

Set 1_100

What is 'A complement'

200

Set 1_200

See diagram

300

Seven cards are labelled: {A, B, C, D, E, F, G}

Find the probability that the first three cards (when randomly chosen) spell ABC (in that order)?

What is 1/210

400

A team of 4 is chosen at random from 6 boys and 5 girls. 

Find the PROBABILITY that the team contains only 1 boy.

What is 2/11

Set 2

100

Set 2_100

What is 'Mutually Exclusive'

200

Set 2_200

All 4 statements are correct

300

Seven cards are labelled: {A, B, C, D, E, F, G}

Find the probability that the first three cards (when randomly chosen) are {A,B,C} (in ANY order)?

What is 1/35

400

What is the probability that when LONDON is re-arranged, the O's are together and the N's are together?

2/15

Set 3

100

Set 3_100

What 101/170

200

How many arrangements of ELEPHANT start with L?

2520

400

Given that the first two letters of a re-arrangement of LONDON are LO, what is the probability that the remaining four letters will spell LONDON when combined with LO?

1/12

Set 4

100

Set 4_100

What is 27/170

200

Set 4_200

What is 10,100/28,730 = 0.35 (to 2 d.p.)