Digital SAT Math Practice #4

Quiz
•
Mathematics
•
9th - 12th Grade
•
Medium
Nguyễn Hà
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
I only
I and II only
I and III only
I and II and III
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
For any positive integer n, τ(n) represents the number of positive divisors of n.
What is the value of τ(τ(τ(12)))?
2
3
4
6
Answer explanation
Since τ(12) = 6, τ(τ(τ(12))) = τ(τ(6)). Since τ(6) = 4, then τ(τ(6)) = τ(4) = 3.
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the following is equal to (78 × 79)10?
727
782
7170
49720
Answer explanation
First, multiply inside the parentheses:
78 × 79 = 717;
then raise to the 10th power: (717)10 = 7170.
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
3
4
5
6
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
If 0 < x < 1, which of the following lists the numbers in decreasing order?
6.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
What is the value of 24 ÷ 2-4?
Answer explanation
24 : 2-4 = 28 = 256
7.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
What is the value of |(-2 - 3) - (2 - 3)|?
Answer explanation
|(-2 - 3) - (2 - 3)| = |(-5) - (-1)| = |-5 + 1| = |-4| = 4
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