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225 All Questions

Mathematics

9th Grade - University

CCSS covered

225 All Questions
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59 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Give a recursive form for
1, 5, 9, 13, 17, ...

a1 = 1;  an = an-1 + 4
a1 = 1;  an = 2 an-1 - 1
a1 = 1;  an = 4n - 3

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which values should complete the truth table?

T  F
T  T
F  T
F  F

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Let an be the nth even number larger than 19.
What is a3?

20
23
22
24

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identify the negation of
"John is a sophomore and he is studying French."

John is not a sophomore, or John is not studying French.
John is not a sophomore and he is not studying French.
John is a freshman, and he is studying Spanish.
John is a sophomore, or he is studying French.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

True or False: The negation of 
∀ x ∈ D, P(x)
is 
∃ x ∈ D, P(x).

True
False

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

True or False: The negation of 
∃ x ∈ D, P(x)
is 
∀ x ∈ D, ¬P(x).

True
False

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identify the negation of 
∀ x ∈ D, P(x) → Q(x)

∃ x ∈ D, P(x) ∨ ¬Q(x)
∃ x ∈ D, ¬P(x) ∧ Q(x)
∀ x ∈ D, ¬(P(x) → Q(x))
∃ x ∈ D, P(x) ∧ ¬Q(x)

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