Question

please give solution ​

Answer 1

Answer:

99 students failed marks as brainliest

Answer 2

✍hey mate!

✍here ur Answer!

Given that there are 100 students and only one student passed in all 3 subjects

So the number of students failed in at least one subject is 99

Let a be the number of students failed only in mathematics, b be number of students failed only in physics and c be number of students failed only in Biology.

Let x be number of students failed only in mathematics and physics, y be number of students failed only in physics and biology and z be the number of students failed only in biology and mathematics.

Let p be the number of students failed in all three subjects

By Venn diagram, we get 99=a+b+c+x+y+z+p

Number of students failed in exactly two subjects is 32=x+y+z

Students failed in mathematics is 50=a+x+z+p , students failed in physics is 45=b+x+y+p and students failed in Biology is 40=c+y+z+p

By adding above three equations, we get 135=a+b+c+2(x+y+z)+3p

⇒135=99+32+2p

⇒p=2