Answer:
0.9739
Step-by-step explanation:
We have 1111+1414=2525 marbles, and
44 small white matbles and
1414-66=1348 big white marbles.
So we have 44+1348=1392 white marbles.
The probability to choose small marbles is P(s)=1111/2525=0,44
The probability to choose white marbles is:
P(w)=1348/2525=0,5513.
The probability to choose small and white is:
P(s and w)=44/2525=0,0174
The probability to choose small or white is:
P(s or w)= P(s)+P(w)-P(s and w)=0,44+0,5513-0.0174=0,9739
