a drawer contains 4 red socks ,3 white socks,and 3 blue socks . without looking , you select a sock at random, replace it,and select a second sock at random. what is the probability that the first sock is blue and the second sock is red?

Question

lgbasallote · Answer

there are 10 socks in total

the probability you pick a blue sock is 3/10

the probability you pick a red sock is 4/10 <--10 because you re-place the sock you took

therefore it's $$\frac{3}{10} \times \frac{4}{10}$$

lgbasallote · Answer

you got the logic right?

anonymous · Answer

yea but do i add of mutiply the 3,4

lgbasallote · Answer

you multiply

lgbasallote · Answer

probability is usually multiplication i believe

anonymous · Answer

well that would put it at 12/100 and my choices are 3/5,7/20,3/25,or 7/100

lgbasallote · Answer

you can still simplify 12/100 ;)

anonymous · Answer

3/5

lgbasallote · Answer

try to check is 12 divided by 3 equal to 100 divided by 5?

lgbasallote · Answer

Hint!! $$\frac{4}{10} = \frac{2}{5}$$

anonymous · Answer

7/20

lgbasallote · Answer

you're guessing arent you

lgbasallote · Answer

lol

anonymous · Answer

yes sorry not understanding i hate when i don't get it

lgbasallote · Answer

look at $$\frac{12}{100}$$ try to divide 12 AND 100 by 4 what do you get? $$\frac{12 \div 4}{100 \div 4}$$

anonymous · Answer

ok i see now thanks u are smart

lgbasallote · Answer

hehe ^_^ just keep on practicing ;)

anonymous · Answer

I have one more like that if u have a mintue could u walk me thourgh it step by step?

lgbasallote · Answer

well i have to go in a few minutes..i better not..i wouldnt want to leave in the middle lol

anonymous · Answer

ok thanks