Question

combi principles

Answer 1

: )

Answer 2

how many letters are there ?
how many digits are there ?

the question is ambiguous yeah

Answer 3

http://prntscr.com/7q5o2w there is one

Answer 4

You're right @ganeshie8 =)

Answer 5

@dan815 why is it 10? =)

Answer 6

10 digits
http://prntscr.com/7q5ox0 there is 2

Answer 7

are you trying to trick us with this question?

Answer 8

you can try the rest on your own, its the same method

Answer 9

No no it is really the question

Answer 10

what is the question

Answer 11

hey is that a new question ?

Answer 12

3 jackets
6 shirts
4 pants

total how many possibilities are there for buying "one" item ?

Answer 13

It seems like the first question is a unintelligible. So i posted the last one.

Answer 14

Yep! one item to choose from 13 items
so one of the items can be chosen in 13C1 = 13 ways

Answer 15

for part b, you need to multiply them :
3C1*6C1*4C1 = 3*6*4 = 72

Answer 16

yezzz how about the 4th question

Answer 17

12c1?

Answer 18

oh its like the fifth question though

Answer 19

12C1 = 12
for parta looks good

Answer 20

16 ppl total

one class representative can be chosen in 16C1 = 16 ways

Answer 21

for partb :
one male class representative and one female class representative can be chosen in : 8C1*6C1 = 8*6 = 48 ways

Answer 22

?

Answer 23

nope, your answer for b is wrong

Answer 24

is it 14c2?

Answer 25

First of all, whats your interpretation of the problem ?

Answer 26

we need to choose two class representative, one from each gender, yes ?

Answer 27

yes yes

Answer 28

whats your answer for part b ?

Answer 29

its 48 ways

Answer 30

good

Answer 31

for partc, we just need to choose 2 students, gender doesn't matter

Answer 32

Yes, 2 students can be chosen from 14 students in 14C2 ways.

Answer 33

the road