Q. Which of the following is the correct binary representation of the decimal number 8?
-
A.
1000
-
B.
1110
-
C.
1010
-
D.
1100
Solution
The binary representation of the decimal number 8 is 1000.
Correct Answer:
A
— 1000
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Q. Which of the following is the correct conversion of the decimal number 10 into binary?
-
A.
1010
-
B.
1001
-
C.
1100
-
D.
1110
Solution
The decimal number 10 is represented as 1010 in binary.
Correct Answer:
A
— 1010
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Q. Which of the following is the correct factorization of the quadratic equation x^2 - 5x + 6?
-
A.
(x - 2)(x - 3)
-
B.
(x + 2)(x + 3)
-
C.
(x - 1)(x - 6)
-
D.
(x + 1)(x + 6)
Solution
The quadratic x^2 - 5x + 6 factors to (x - 2)(x - 3).
Correct Answer:
A
— (x - 2)(x - 3)
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Q. Which of the following is the correct factorization of the quadratic expression x^2 - 5x + 6?
-
A.
(x - 2)(x - 3)
-
B.
(x + 2)(x + 3)
-
C.
(x - 1)(x - 6)
-
D.
(x + 1)(x + 6)
Solution
The expression factors to (x - 2)(x - 3) since -2 and -3 are the roots.
Correct Answer:
A
— (x - 2)(x - 3)
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Q. Which of the following is the correct interpretation of log_5(1)?
-
A.
0
-
B.
1
-
C.
5
-
D.
Undefined
Solution
log_5(1) = 0 because any number raised to the power of 0 equals 1.
Correct Answer:
A
— 0
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Q. Which of the following is the correct order of operations to simplify the expression 2 + 3 * (4 - 1)?
-
A.
Addition, Multiplication, Parentheses
-
B.
Parentheses, Multiplication, Addition
-
C.
Multiplication, Parentheses, Addition
-
D.
Multiplication, Addition, Parentheses
Solution
The correct order is to first solve the parentheses (4 - 1), then multiply by 3, and finally add 2.
Correct Answer:
B
— Parentheses, Multiplication, Addition
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Q. Which of the following is the correct order of the base systems from least to most complex? (2023)
-
A.
Decimal, Binary, Hexadecimal
-
B.
Binary, Decimal, Hexadecimal
-
C.
Hexadecimal, Binary, Decimal
-
D.
Decimal, Hexadecimal, Binary
Solution
Binary is the simplest (base-2), followed by Decimal (base-10), and then Hexadecimal (base-16), making the correct order Binary, Decimal, Hexadecimal.
Correct Answer:
B
— Binary, Decimal, Hexadecimal
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Q. Which of the following is the correct property of logarithms?
-
A.
log_a(b) + log_a(c) = log_a(bc)
-
B.
log_a(b) - log_a(c) = log_a(b/c)
-
C.
log_a(b^c) = c * log_a(b)
-
D.
All of the above
Solution
All the listed properties are correct and fundamental to logarithmic functions.
Correct Answer:
D
— All of the above
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Q. Which of the following is the correct representation of 15 modulo 4?
Solution
15 divided by 4 gives a remainder of 3, hence 15 mod 4 = 3.
Correct Answer:
A
— 3
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Q. Which of the following is the correct representation of the decimal number 10 in base-3?
-
A.
101
-
B.
110
-
C.
100
-
D.
111
Solution
To convert 10 to base-3, divide by 3: 10 ÷ 3 = 3 remainder 1, 3 ÷ 3 = 1 remainder 0, 1 ÷ 3 = 0 remainder 1. Reading the remainders from bottom to top gives 110.
Correct Answer:
B
— 110
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Q. Which of the following is the correct representation of the decimal number 15 in base 8?
Solution
In base 8, the decimal number 15 is represented as '17'.
Correct Answer:
A
— 17
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Q. Which of the following is the correct representation of the decimal number 15 in base-2?
-
A.
1111
-
B.
1011
-
C.
1101
-
D.
1001
Solution
The decimal number 15 is represented as '1111' in binary.
Correct Answer:
A
— 1111
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Q. Which of the following is the correct representation of the decimal number 15 in hexadecimal?
Solution
In hexadecimal, the decimal number 15 is represented as F.
Correct Answer:
A
— F
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Q. Which of the following is the correct representation of the decimal number 15 in base-4?
Solution
15 in decimal is represented as '33' in base-4 (3*4^1 + 3*4^0 = 12 + 3 = 15).
Correct Answer:
A
— 33
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Q. Which of the following is the correct representation of the decimal number 25 in base-8?
Solution
25 in decimal is represented as '31' in base-8 (3*8^1 + 1*8^0 = 24 + 1 = 25).
Correct Answer:
A
— 31
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Q. Which of the following is the correct simplification of (x^2y^3)/(xy^2)?
-
A.
x^(2-1)y^(3-2)
-
B.
x^1y^1
-
C.
x^2y^5
-
D.
x^3y^1
Solution
Using the quotient rule for exponents, (x^2y^3)/(xy^2) simplifies to x^(2-1)y^(3-2) = xy.
Correct Answer:
A
— x^(2-1)y^(3-2)
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Q. Which of the following is the correct simplification of (x^3 * y^2) / (x^2 * y)?
-
A.
x^(3-2) * y^(2-1)
-
B.
x^(5) * y^(1)
-
C.
x^(1) * y^(1)
-
D.
x^(1) * y^(3)
Solution
Using the property of exponents for division, we subtract the exponents: x^(3-2) * y^(2-1) = x^1 * y^1.
Correct Answer:
A
— x^(3-2) * y^(2-1)
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Q. Which of the following is the correct simplification of (x^3 * y^2)^(2)?
-
A.
x^6 * y^4
-
B.
x^5 * y^2
-
C.
x^3 * y^2
-
D.
x^2 * y^3
Solution
Using the power of a product property, (a*b)^n = a^n * b^n, we get (x^3)^2 * (y^2)^2 = x^6 * y^4.
Correct Answer:
A
— x^6 * y^4
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Q. Which of the following is the correct simplification of (x^3y^2)^2?
-
A.
x^6y^4
-
B.
x^5y^2
-
C.
x^3y^2
-
D.
x^2y^3
Solution
Using the power of a product property, (x^3y^2)^2 = x^(3*2)y^(2*2) = x^6y^4.
Correct Answer:
A
— x^6y^4
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Q. Which of the following is the correct simplification of log_10(1000) + log_10(0.01)?
Solution
log_10(1000) = 3 and log_10(0.01) = -2, thus 3 + (-2) = 1.
Correct Answer:
B
— 0
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Q. Which of the following is the correct simplification of log_10(1000) - log_10(10)?
Solution
Using the property of logarithms, log_10(1000) = 3 and log_10(10) = 1. Therefore, log_10(1000) - log_10(10) = 3 - 1 = 2.
Correct Answer:
C
— 3
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Q. Which of the following is the correct simplification of log_10(1000) using properties of logarithms?
Solution
log_10(1000) = log_10(10^3) = 3.
Correct Answer:
A
— 3
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Q. Which of the following is the correct simplification of log_2(8) + log_2(4)?
-
A.
log_2(32)
-
B.
log_2(12)
-
C.
log_2(16)
-
D.
log_2(6)
Solution
Using the property of logarithms, log_2(8) + log_2(4) = log_2(8*4) = log_2(32) = log_2(16).
Correct Answer:
C
— log_2(16)
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Q. Which of the following is the correct simplification of log_5(25) - log_5(5)?
Solution
log_5(25) = 2 and log_5(5) = 1, thus log_5(25) - log_5(5) = 2 - 1 = 1.
Correct Answer:
A
— 1
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Q. Which of the following is the correct simplification of log_a(b^2)?
-
A.
2 log_a(b)
-
B.
log_a(2b)
-
C.
log_a(b) + 2
-
D.
log_a(b) - 2
Solution
Using the power rule of logarithms, log_a(b^2) simplifies to 2 log_a(b).
Correct Answer:
A
— 2 log_a(b)
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Q. Which of the following is the correct simplification of log_a(b^c)?
-
A.
c * log_a(b)
-
B.
log_a(c) * log_a(b)
-
C.
log_a(b) / c
-
D.
log_a(c^b)
Solution
The property of logarithms states that log_a(b^c) = c * log_a(b).
Correct Answer:
A
— c * log_a(b)
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Q. Which of the following is the correct vertex form of the quadratic equation y = x² - 4x + 3?
-
A.
y = (x - 2)² - 1
-
B.
y = (x + 2)² - 1
-
C.
y = (x - 2)² + 1
-
D.
y = (x + 2)² + 1
Solution
Completing the square for the equation y = x² - 4x + 3 results in y = (x - 2)² - 1.
Correct Answer:
A
— y = (x - 2)² - 1
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Q. Which of the following is the greatest common divisor (GCD) of 48 and 180?
Solution
The GCD of 48 and 180 is 12, as it is the largest number that divides both without a remainder.
Correct Answer:
A
— 12
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Q. Which of the following is the greatest common factor (GCF) of 48 and 180?
Solution
The GCF of 48 and 180 is 12.
Correct Answer:
A
— 12
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Q. Which of the following is the least common multiple (LCM) of 9 and 12?
-
A.
36
-
B.
72
-
C.
108
-
D.
144
Solution
The LCM of 9 and 12 is 36, as it is the smallest number that both can divide evenly.
Correct Answer:
A
— 36
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