Monday, June 22, 2015

Special properties of number 22 (Today’s Date)

1. Twenty-two is a pentagonal number.
2. 22 is a palindromic number in decimal system
3. 22 divided by 7 approximates the irrational number π, the ratio of the circumference of a circle to its diameter.
4. There are, in fact, precisely 22 ways to express 8 as a sum of positive integers. i.e. 8 can be partitioned in 22 ways:
8, 7+1, 6+2, 6+1+1, 5+3, 5+2+1, 5+1+1+1, 4+4, 4+3+1, 4+2+2, 4+2+1+1, 4+1+1+1+1, 3+3+2, 3+3+1+1, 3+2+2+1, 3+2+1+1+1, 3+1+1+1+1+1, 2+2+2+2, 2+2+2+1+1, 2+2+1+1+1+1, 2+1+1+1+1+1+1, and 1+1+1+1+1+1+1+1
5. 22 is the smallest number which can be expressed as the sum of 2 primes in 3 ways: 3 + 19, 5 + 17, and 11 + 11
6. 22 is the number of different ways of linking 5 hexagons together.
7. The Chemical Element Titanium has an atomic number of 22.
8. The Human head is constituted of 22 bones: 8 for the cranium and 14 for the face.
9. By the old English measuring system there are 22 yards in a chain. This is the
length of a cricket pitch.
10. There are 22 players on the field in American Football, soccer and field hockey.

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