2 cards are drawn with replacement from a standard deck of 52 playing cards.find the probability that the first card is a king and the second is a diamond ?
choices A.(4/52)(4/52) b.(4/52)(13/52) c.(13/52)(13/52) d(4/52)(13/52)+(13/52)(4/52) my second question is how many ways can a teacher arrange 6 students in the front row if there are 30 total students? a.171,001,720 b.427,518,000 c.657,720 d.36

Question

2 cards are drawn with replacement from a standard deck of 52 playing cards.find the probability that the first card is a king and the second is a diamond ?
 choices A.(4/52)(4/52) b.(4/52)(13/52) c.(13/52)(13/52) d(4/52)(13/52)+(13/52)(4/52) my second question is how many ways can a teacher arrange 6 students in the front row if there are 30 total students? a.171,001,720 b.427,518,000 c.657,720 d.36

anonymous · Answer

Number of kings is 4 out of 52, so first draw is 4/52.
A suit has 13 cards, so the second draw is 13/52.
Multiply these two and the answer seems to be "b".
The second part seems to be a combination problem which I don't know off the top of my mind.

anonymous · Answer

thats okay oh one question i got this problem about solving system and was wondering if you could help me

anonymous · Answer

@nervegrinder