Question

Help please

Answer 1

@Shadow @Vocaloid

Answer 2

this might be wrong but 30 and 28

Answer 3

@Vocaloid

Answer 4

okay so lets start with question 1 :)

Answer 5

total students are 10 and there are 3 positions for winners.
so we have

Answer 6

now question arises what is the condition of winning gold out of 10 students

Answer 7

the answer is we have 10 ways to winning gold because out of 10 students ,all likely have same winning chances to win gold

Answer 8

now, suppose someone won gold,so there are 9 ways to win silver because there are 9 students left and all have same equal chances

Answer 9

similarly for bronze ,we have 8 ways

Answer 10

so finally
to find no of ways ,just multiply them
so \(\large \bf 10 \times 9 \times 8=720\)
That's our answer :)

Answer 11

if you get online ,we'll solve question 2

Answer 12

Iam here

Answer 13

@loveboy

Answer 14

@Vocaloid

Answer 15

Use the combination formula

n!/(r!(n-r)!)

Answer 16

n = total number and r = group size

Answer 17

Reread the problem please

Answer 18

We are talking about the books

Answer 19

Good that's it