Question

Let U=set of integers between 10 to 20,S=set of first 20 odd numbers and T=set of first 20 even numbers. Then verify union law in De Morgan's.
Please help me with it. ​

Answer 1

=75

PREMISES

y=The sum of the odd numbers (whole numbers) in the series 10–20

ALGORITHM

(20–10)/2=a, where “a”= the number of odd whole numbers in the series 10–20

CALCULATIONS

The odd whole numbers from 10–20 are 11,13,15,17, and 19

y=11+13+15+17+19

y=10(5)+1(1+3+5+7+9)

y=50+25

y=

75

PROOF

If y=75, then the inverse of the equation y=10(5)+1(1+3+5+7+9) returns

y-(25)=10(5)

75–25=10(5) and

50=50 proves the solution y=75 to the expression y=11+13+15+17+19 implied by the premises above

C.H.

Answer 2

Let U=set of integers between 10 to 20,S=set of first 20 odd numbers and T=set of first 20 even numbers. Then verify union law in De Morgan's.

Let U=set of integers between 10 to 20,S=set of first 20 odd numbers and T=set of first 20 even numbers. Then verify union law in De Morgan's. Please help me with it.