Wipro
Company
Numerical Ability
Probability
In an office, 3 / 4 of the staff can neither type nor take shorthand. However, 1 / 5th can type and 1 / 3rd can take shorthand. What part of the whole staff can do both ?
a. 1 / 5
b. 3 / 40
c. 13 / 40
d. 17 / 60
Read Solution (Total 3)
-
- 3/4 th cant do both
if x is total number 3x/4 cant do .
x - 3x/4 = x/4 = n(AUB) which indicates people who can do either one or both
n(AuB) = n(A) + n(B) -n(A intersection B)
n(A intersection B) = x/5 +x/3 - x/4
= 17x/60
17/60 th of the staff can do both
- 10 years agoHelpfull: Yes(3) No(1)
- 13/60 as 3/4 of staff can neither type nor take shorthand then 1/5 can type and 1/3rd shorthand ;; 3/4 - (1/5 +1/3 ) = 13/60
- 10 years agoHelpfull: Yes(0) No(0)
- 13/60 as 3/4 of staff can neither type nor take shorthand then 1/5 can type and 1/3rd shorthand ;; 3/4 - (1/5 +1/3 ) = 13/60
- 10 years agoHelpfull: Yes(0) No(0)
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