Maths

Factorial

Def: Multiplication of all proceeding numbers.

For e.g.:

1 10 Factorial or (!)

        = 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1

        = 10 !

        =  36,28,800 or 36 lacks,28 thousands,8 hundreds

Exercises

9 ! = 

5 ! =

Binary numbers

Def: The number system containing digits 1 and 0.

For e.g.:

The counting

1=1               1001=9

10=2             1010=10

11=3             1011=11

100=4           1100=12

101=5           1101=13

110=6           1110=14

111=7           1111=15

1000=8         10000=16

Exercises

    1010                           1001

  +1011                         +1001

=                                =

A.  10100                    A. 1110

B.  1010                      B. 1111

C. 10101                    C. 10010

D. No one of this      D. No one of this