petroglyphs
10000
There are 2704 of them between 1000 and 10000 inclusive.
there are 10 palindromic numbers between 9000 and 10000 9009,9119,9229,9339,9449,9559,9669,9779,9889,9999
There is an infinity of numbers between 8500 and 10000. For example 8605+sqrt(2).
The number that is between 8500 and 10000 is 9250. This is simply the midpoint of the two numbers, calculated by averaging them. However, there are many other numbers that also lie between 8500 and 10000, such as 8600, 9000, or 9500.
the trick to this is to realize the pattern: 10000=0+10000 10000=1+9999 10000=2+9998 ... 10000=4999+5001 so there are 5000 (10000s) and the unmatched 5000 in the middle = 50,005,000
40
The number that lies halfway between 8500 and 10000 can be calculated by finding the average of the two numbers. Add 8500 and 10000 together to get 18500, then divide by 2 to find the average, which is 9250. Therefore, 9250 is the number that lies halfway between 8500 and 10000.
10000
Approximately 9000-10000 earthquakes strong enough to be felt occur worldwide each year.
Int(10000/3) = Int(3333.3) = 3333
1-10000 Simple, minus 10,000 by 2 There's your answer. 99,998