Answer:

Step-by-step explanation:
÷ 6
leave the fraction, change division to multiply, turn 6 upside down
=
×
( cancel 2 and 6 by 2 )
=
× 
= 
= 
Answer:

Step-by-step explanation:
4unity to the left
3unity down
Answer:
Option 4
Step-by-step explanation:
=> 
Combining like terms
=> 
=> 
The probabilities of knocking down zero, one, and two pins are

and

, respectively. The total probability of knocking down at most two is thus

, or

.