Question

Q(3-4) in a class consisting of 75 students 25 didn’t know typing,45 knew short hand and 10 knew neither typing nor short hand. 3. how many students knew both typing and short hand?
a. 20
b. 25
c. 30
d. cannot be determined 4. how many students knew only typing?
a. 20
b. 25
c. 30
d. 35

Answer 1

3 Q
the Answer Will be 20
Coz 45 include 25 which don't know typing. and if subtract them the Answer Will be 20.

A.4 will also 20.