Demography is the statistical study of human populations.

Demography examines the size, structure, and movements of populations over space and time. 

Decimal    Binary

45        101101

X²+ (x-3)²= 89

X²+x²+9-6x=89

2x² -6x+9-89=0

2x² -6x-80=0

2 common

x² -3x-40=0

x² -8x +5x-40=0

x(x-8)+5(x-8)

(x+5)(x-8)

X=8

8-3=5

We use as soon as to show that something happens immediately, i.e. 'at the very moment another action is completed.

The word “Either” is in the wrong place. The sentence should be:

“The action was either just or unjust.

 Karl Marx (1818-1883) was a philosopher, author, social theorist, and an economist.

He is famous for his theories about capitalism and communism.

Two sets A and B have the same cardinality if there exists a bijection from A to B, that is, a function from A to B that is both invective and subjective.

 if the two set have same cardinality then it is called equivalent set,. a={1,2,3} m={1,2,3} same credinality if two sets have same cardinality and same elements then it is called equal set.eg d={1,2,3,4} e={1,2,3,4} d and e are equal set same element and same credinality