CodeHS 2.14 De Morgan's Laws

Augustus De Morgan was

• British

• American

• German

• French

• Dutch

Which of these are De Morgan's Laws?

• !(A && B) == !A || !B

• !(A || B) == !A && !B

• !(A || B) == !A || !B

• !(A && B) == !A && !B

• !(A || B) == A !! B

Which is equivalent to

!(advantage || engagedAlly)

• !advantage && !engagedAlly

• !advantage || !engagedAlly

• advantage && engagedAlly

• advantage || engagedAlly

Which is equivalent to

age < 18 && citizen == true

• !(age >= 18 || citizen != true)

• !(age > 18 || citizen != true)

• !(age != 18 || citizen != true)

• !(age >= 18 && citizen != true)

• !(age > 18 && citizen == false)

Why do we care about De Morgan's Laws?

• code that's easier to read

• streamlined code can improve battery life in devices

• knowing them makes it more likely to land a job

• to make better encryption algorithms

• it actually doesn't matter that much