Answer:
n=601
Step-by-step explanation:
Formula used:

Solution:

Where,

As there is no previous estimate for p
Then, p=0.5
Here on using the table

Also,
E=0.04
p=0.5
Thus,
n=600.2279407
On approximating the value,
n=601
Earthquakes can cause all of the above.
trigger other earthquakes - when there is a large magnitude earthquake it
lead to shake the earth's surface. Thus it can create more earthquakes on the same place or neighboring places.
cause billions of dollars - when there is a large disturbance it can destroy big buildings, homes, etc. Which is basically a billion dollar loss.
cause tsunami - If there is a disturbance in the earth's surface near sea's, etc there is chance of tsunami.
The number of ways 4 digit numbers can be forms using the digits 0 to 9 with no number repeated is given by

The probability that one of the numbers is 9876 is given by