How many ways can 3 students be chosen from a class of 20 to represent their class at a banquet? (1 mark) 6,840
3,420
1,140
2,280
15. You and 3 friends go to a concert. How many different ways can you sit in the assigned seats? (1 mark)
a.6 ways
b.12 ways
c.24 ways
d.10 ways
16. You have 5 pairs of jeans and want to take 2 on vacation. How many ways can you choose 2 pairs of jeans? (1 mark)
a.10 ways
b.15 ways
c.4 ways
d.20 1st tracks:
choose 3 from 20
= C(20,3) = 1140
15.
Places allocated —> the order counts, so permutation of 4
= 4x3x2x1 = 24
(you were right)
16.
choose 2 from 5
= C(5,2) = 10
(the order in which you select your jeans doesn’t matter) My question was, “How many students can be chosen from a class of 16 to represent their class at a banquet?”
If you could give me the answer, I would appreciate it. I think the answers are
b
vs
d My answer is A False false and somewhat false! nothing someone help plssssssss, “how many ways can we choose 3 students from a class of 20 to represent their class at the banquet?