Question

LOGIC QUESTION:
What's the negation (opposite) of this sentence:
"In all school, there exists a student such that
he has 90% in math AND (he has 80% English OR he has 70% in history)"

Answer 1

@ikram002p

Answer 2

@Luigi0210 @iambatman

Answer 3

@waterineyes @UnkleRhaukus

Answer 4

What do u think how can u make it opposite sentence please first give me your answer first.

Answer 5

"there EXISTS schools , such that ALL students has 90% in math OR ( 80% English AND 70% in history)

Answer 6

I think it's:
There exists schools in which there's no student who
has 90% in math AND (has 80% English OR has 70% in history)

Answer 7

the inverse of exist is all hmm

Answer 8

not sure about this but the rest is correct
http://prntscr.com/4ttycm

Answer 9

Basically, am i correct for saying the negation of below statement:

for all A there exists B that holds: (Statement C) AND (statement B OR statement C)

is

there exists an A such that no B holds: ((Statement C) AND (statement B OR statement C))

Answer 10

5a) is the original question