Formative Exercise 4.1 pg 131

True The number of ways to answer
5

False

5 4 choices

(a) 10 10 10 (b) 10 9 8

The number of ways The number of ways

4 digits: 2, 4, 7 and 8 Without repetition of digits

5

Even numbers

3 digits: 2, 4 and 8

5

1
FM 2 3 4 5 6 7 8 9

FM
MF

FM

BAKU : BAKA :

No, because the word BAKA has identical letters A.

Right = 5

Up = 3

n=8

The number of routes

The number of arrangements

Remember to do your Work book until page 67 (no. 7 & 8)