How many prime numbers are there below hundred?
number of prime numbers below hundred = 25
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97
0
1
2
3
4
5
6
7
8
9
10 <- Decimal's feature. (10*1)
11
...
99
100 <- Decimal's feature. (10*10)
1 1
2 10 <- binary's feature. (2*1)
3 11
4 100 <- binary's feature. ( 2*2)
5 101
6 110
7 111
8 1000 <- binary's feature. (2*2*2)
Dr. Koji Kobashi, Jr.
What is being measured of avogadro's number?
One mole of atoms. The number of Carbon-12 atoms that are required to form a block that weighs precisely 12 grams. Roughly 6.02x10^23 atoms.
No - its positive integer factors are:
1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 125, 250, 275, 550, 1375, 2750