Answer:
15:1
Explanation:
When a coin is tossed once, there are two probable outcome: a heads or a tail.
Now, when the coin is tossed four times, the total number of outcomes will be:
[tex]2^4=16[/tex]
• The outcome of obtaining ,heads all 4 times ,= 1
,
• The number ofunfavourable outcomes = 16-1 = 15
The odds against an event is calculated using the formula below.
[tex]\frac{\text{Number of Unfavourable Outcomes}}{\text{Number of favourable Outcomes}}=\frac{15}{1}=15\colon1[/tex]
The odds against obtaining heads all 4 times is 15:1.
