Answer:
1/4845
Step-by-step explanation:
The probability of selecting a defective cog first is
1/5
The second cog is
3/19
The third cog is
1/9
And the fourth cog is
1/17
Multiplying these together we get
1/5 * 3/19* 1/9 * 1/17 = 1/4845
Answer:
1. yes
2.no
3.yes
4. no
hope this helps I'm not sure about number 2 tho
Step-by-step explanation:
Here we can see the both numbers are 7 with different powers so we can sum up the powers


The first species to populate an uninhabited