I could be wrong, but just divide 31,800 by 365 which would give you the number of fatalities each day, then divide that number by 24. that should give you the number of deaths in an hour. Again, could be totally wrong.
I'm assuming it is -m, +m, -m, +m etc..
The odds of 1 coin landing tails is 1/2, for 2 coins it would be 1/4, 3 would be 1/8, 4 would be 1/16, etc.
the way you find this is by doing 1/2^n where n is the number of coins you have. if you plug in 20, you get 1/1,048,576
Answer:
40/9 or 4.444444
Step-by-step explanation:
a = 4 b = 5
8b/b + a
8(5)/b + a
40/b + a
40/ 5 + 4
Answer = 40/9
It depends what you want it rounded to