Answer:
5 times 4 will give you 20.
Step-by-step explanation:
Answer:
112 weeks
Step-by-step explanation:
784/7=112
Answer:
1/4
Step-by-step explanation:
In total Jessica has 12 things in her pocket and 3 are acorns so if she just pulls one thing out there is a 3/12 chance that it will be an acorn which we can reduce to 1/4
I hope this helps and please don't hesitate to ask if there is anything still unclear!
Answer: D) 1.601 x 10 ^9
Step-by-step explanation:
Given that Erica and AAron,are using lottery system to decide who will wash dishes every night.
They put some red and blue power chips and draw each one. If same colour, Aaron will wash and if not same colours Erica will wash
If the game is to be fair, then both should have equal chances of opportunity for washing.
i.e. Probability for Erica washing = Prob of Aaron washing
i.e. P(different chips) = P(same colour chips)
Say there are m red colours and n blue colours.
Both are drawing at the same time.
Hence Prob (getting same colour) = (mC2+nC2)/(m+n)C2
Probfor different colour = mC1+nC1/(m+n)C2
The two would be equal is mC2 +nC2 = m+n
This is possible if mC2 =m and nC2 = n.
Or m = 2+1 =3 and n =3
That for a fair game we must have both colours to be 3.
