book Maths Puzzle Numerical Ability

what is the cardinal number for this set
(1,3,5,.....1001)
(1,2,4,8,....1024)

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book Other Question

4/x^2 + 3/x -10 = 0

6 + 4/x-1 = 5/x-3

3.5x + 4.6/x = 1.2

Can anyone help me?!
The sum of the squares of two consecutive positive intergers is 164 find the intergers,and please include the heading to define the variables.