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how many letters are there ? how many digits are there ? the question is ambiguous yeah
http://prntscr.com/7q5o2w there is one
You're right @ganeshie8 =)
@dan815 why is it 10? =)
10 digits http://prntscr.com/7q5ox0 there is 2
are you trying to trick us with this question?
you can try the rest on your own, its the same method
No no it is really the question
what is the question
hey is that a new question ?
3 jackets 6 shirts 4 pants total how many possibilities are there for buying "one" item ?
It seems like the first question is a unintelligible. So i posted the last one.
Yep! one item to choose from 13 items so one of the items can be chosen in 13C1 = 13 ways
for part b, you need to multiply them : 3C1*6C1*4C1 = 3*6*4 = 72
yezzz how about the 4th question
oh its like the fifth question though
12C1 = 12 for parta looks good
16 ppl total one class representative can be chosen in 16C1 = 16 ways
for partb : one male class representative and one female class representative can be chosen in : 8C1*6C1 = 8*6 = 48 ways
nope, your answer for b is wrong
is it 14c2?
First of all, whats your interpretation of the problem ?
we need to choose two class representative, one from each gender, yes ?
whats your answer for part b ?
its 48 ways
for partc, we just need to choose 2 students, gender doesn't matter
Yes, 2 students can be chosen from 14 students in 14C2 ways.
Suppose A is your home, C is your school and B is an icecream shop on the way
parta is asking you to find out the number of paths between A and C
Okay.. Im following. =)
Make a guess, how many total paths are there ?
Nope. Notice that for every path from A to B, there are 4 paths from B to C : |dw:1436340238276:dw|
since there are 6 paths from A to B, the total number of paths from A to C will be simply 6*4 = 24
read the question again what do we need to find for parta ?
it is just asking you to find the number of paths from A to C through B
there are 24 paths so the answer is 24
can you try partb ?
part? you mean..
A to C, there are 6*4 = 24 paths C to A, again there are 4*6 = 24 paths so for a round trip, there are 24*24 distinct paths
Thank you so much @ganeshie8 =)