Question

found that 15 take mathematics and 12 has taken physics 11 has taken chemistry 5 has taken chemistry and mathematics and chemistry 9 has taken mathematics​

Answer 1

$\huge{\underline{\underline{\bf{SOLUTION-}}}}$

Answer 2

Answer:

R.E.F image  

(i) 11−5−4+3=5

(3 removed twice)  

(ii) 4−3=1

(iii) only maths =15−9−5+3  

=4

only phy =12−9−4+3=2

only chem =5⇒Total=11  

(iv) Atleast one =11+9+5+4−2(3)

=29−6=23  

⇒ None =25−23=2

(v) 23

Step-by-step explanation: