1. A = {1,2,3,4}, Find |A| ...
Solution:
Here `A={1,2,3,4}`
`:.|A|=4`
2. A = {x<=5; x in N}, Find |A| ...
Solution:
`A={x<=5; x in N}`
`:.A={1,2,3,4,5}`
`:.|A|=5`
3. A = {x^2<10; x in N}, Find |A| ...
Solution:
`A={x^2<10; x in N}`
`:.A={1,2,3}`
`:.|A|=3`
This material is intended as a summary. Use your textbook for detail explanation.
Any bug, improvement, feedback then
