Put two and two together to get 100 And still be right!!!

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Presentation transcript:

Put two and two together to get 100 And still be right!!!

Twice the Average Riddle 10 legs sat upon 11 legs with 1 leg on his lap. In comes 100 legs, picks up 1 leg and runs away from 10 legs. Up jumps 10 legs, picks up 11 legs, throws it at 100 legs and makes him bring back 1 leg. Explain what has taken place.

Solution to Riddle. 10 legs is a man/woman. 11 legs is a three-legged stool. 100 legs is a four legged dog. 1 leg is a leg of ham. All numbers are expressed in binary.

Binary Arithmetic In binary arithmetic there are just two digits, 0 and 1 (unlike decimal where there are ten, 0,1,2,3,4,5,6,7,8, and 9). In binary, 0 means zero and 1 means one. However, 10 in binary means 1x2 + 0x1 i.e. 2 in decimal. 11 in binary means 1x2 + 1x1 i.e. 3 in decimal 100 in binary means 1x4 + 0x2 + 0x1 i.e in binary means 1x4 + 0x2 + 1x1 i.e. 5

From Decimal To Binary Convert a number (25 say) to binary; Divide 25 by 2 to get 12 with remainder 1 Divide 12 by 2 to get 6 with remainder 0 Divide 6 by 2 to get 3 with remainder 0 Divide 3 by 2 to get 1 with remainder 1 Divide 1 by 2 to get 0 with remainder 1 Then the binary for 25 is i.e. the last remainder is first, then the second last, etc. Try it for the numbers in your date of birth.

Why Bother With Binary Calculators and computers work in binary Better understanding of binary ultimately means better design, programming and use of these machines.