Q3 Summative

The product of a positive integer n and all the positive integers less than it is ____.

• powers of n

• multiples of n

• n- factors

• n factorial

Which of the following situations or activities involve permutation?

• Matching shirts and pants

• Assigning telephone numbers to subscribers

• Forming a committee from members of a club

• Forming different triangles out of 5 points on the plane, no three of which are collinear.

What is P(8,5)?

• 56

• 336

• 1 400

• 6 720

If P(n, 4) = 5040, then n = _____.

• 12

• 10

• 9

• 8

Given x = P(n, n) and y = P (n, n-1), what can be concluded about x and y?

• x > y

• x < y

• x = y

• x = -y

The number of ways of selecting from a set when the order is not important.

• combination

• differentiation

• integration

• permutation

What is C (n, n) = ____?

• n

• r

• 1

• 0

What is C(8, 5)?

• 56

• 65

• 650

• 6560

If C(n, 4) = 126, what is n?

• 11

• 10

• 9

• 7

Ma'am Grace wants to produce different test questions for her essay test. If she plans to do this by putting together 3 out of 5 questions she prepared, how many different sets of questions could she construct?

• 10

• 20

• 60

• 80