IBM
Company
Numerical Ability
Probability
Two dice are thrown together. What is the probability that the sum of the numbers on the two faces is divisible by 4 or 6?
A. 5/18 B. 7/18
C. 9/18 D. 12/18
Read Solution (Total 5)
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- n(s)= 6^2=36
let E be the event such that the sum of the numbers is divisible by 4 or 6
E={(1,3),(1,5),(2,2),(2,4),(2,6),(3,1),(3,3),(3,5),(4,2),(4,4),(5,1),(5,3),(6,2),(6,6)}
therefore n(E)=14
p(E)=n(S)/n(E)=14/36=7/18 - 13 years agoHelpfull: Yes(22) No(2)
- n(S)=6*6=36
no. of set, sum div by 4 or 6 are (1,5),(2,4),(2,6),(3,1),(3,3),(3,5),(4,2),(4,4),(5,1),(6,2),(1,3),(3,3),(4,4),(5,3)
n(E)=14
P=14/36=7/18
'B' is ri8. - 12 years agoHelpfull: Yes(4) No(2)
- answer will be 7/18 (b)
- 10 years agoHelpfull: Yes(0) No(1)
- B. 7/18
14/36 - 9 years agoHelpfull: Yes(0) No(1)
- 7/18
9/36+6/36-1/36 - 9 years agoHelpfull: Yes(0) No(1)
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