Q. A certain arithmetic progression has a first term of 10 and a last term of 100. If there are 20 terms in total, what is the common difference?
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Solution
The last term of an AP is given by a + (n-1)d. Here, 100 = 10 + (20-1)d. Solving gives d = 5.
Correct Answer: A — 5
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Q. A sequence is defined as follows: 2, 5, 8, 11, ... What is the 15th term of this sequence?
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Solution
The first term a = 2 and the common difference d = 3. The 15th term = a + (15-1)d = 2 + 42 = 44.
Correct Answer: B — 41
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Q. According to the passage, which of the following is a common misconception about inequality?
A.
It is only an economic issue.
B.
It affects everyone equally.
C.
It can be easily solved.
D.
It is a global issue.
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Solution
The passage clarifies that inequality is multifaceted and not limited to economic factors.
Correct Answer: A — It is only an economic issue.
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Q. Based on the passage, which of the following is NOT a reason given for the persistence of inequalities?
A.
Historical injustices
B.
Lack of education
C.
Government negligence
D.
Cultural beliefs
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Solution
The passage does not mention government negligence as a reason for the persistence of inequalities.
Correct Answer: C — Government negligence
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Q. Based on the passage, which of the following is NOT a suggested method for addressing inequalities?
A.
Implementing progressive taxation.
B.
Increasing access to quality education.
C.
Promoting economic growth without regulation.
D.
Enhancing social welfare programs.
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Solution
The passage does not support the idea of promoting unregulated economic growth as a method to address inequalities.
Correct Answer: C — Promoting economic growth without regulation.
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Q. If 10^(x) = 1000, what is the value of x? (2023)
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Solution
Since 1000 can be expressed as 10^3, we have 10^x = 10^3, thus x = 3.
Correct Answer: B — 3
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Q. If 10^(x+2) = 1000, what is the value of x? (2023)
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Solution
Since 1000 can be expressed as 10^3, we have 10^(x+2) = 10^3, thus x + 2 = 3, leading to x = 1.
Correct Answer: A — 1
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Q. If 4^(x-1) = 64, what is the value of x?
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Solution
Since 64 can be expressed as 4^3, we have 4^(x-1) = 4^3, thus x - 1 = 3, leading to x = 4.
Correct Answer: B — 4
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Q. If 7^(x) = 1/49, what is the value of x? (2023)
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Solution
Since 1/49 can be expressed as 7^(-2), we have 7^x = 7^(-2), thus x = -2.
Correct Answer: A — -2
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Q. If a function f is defined as f(x) = 3x + 2, what is the value of f(4)?
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Solution
To find f(4), substitute x with 4: f(4) = 3(4) + 2 = 12 + 2 = 14.
Correct Answer: A — 14
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Q. If a function f(x) is defined as f(x) = 2x + 3, what is the slope of the graph?
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Solution
In the linear function f(x) = mx + b, 'm' represents the slope. Here, the slope is 2.
Correct Answer: C — 2
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Q. If a function f(x) is defined as f(x) = 2x + 5, what is the slope of the graph?
A.
0
B.
2
C.
5
D.
Undefined
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Solution
In the linear function f(x) = mx + b, 'm' represents the slope. Here, m = 2.
Correct Answer: B — 2
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Q. If a polynomial is expressed as P(x) = 2x^3 - 4x^2 + 3x - 5, what is the coefficient of x^2?
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Solution
In the polynomial P(x), the coefficient of x^2 is -4.
Correct Answer: B — -4
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Q. If a polynomial is expressed as P(x) = 2x^3 - 4x^2 + 3x - 5, what is the coefficient of the x^2 term?
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Solution
In the polynomial P(x), the coefficient of the x^2 term is -4.
Correct Answer: B — -4
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Q. If a^0 = 1 for any non-zero number a, which of the following statements is true?
A.
0 raised to any power is also 1.
B.
Any number raised to the power of zero is zero.
C.
Only positive numbers can be raised to the power of zero.
D.
The exponent zero indicates the multiplicative identity.
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Solution
The exponent zero indicates the multiplicative identity, meaning any non-zero number raised to the power of zero equals one.
Correct Answer: D — The exponent zero indicates the multiplicative identity.
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Q. If a^3 * a^(-2) = a^x, what is the value of x? (2023)
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Solution
Using the property of exponents, a^3 * a^(-2) = a^(3 - 2) = a^1, hence x = 1.
Correct Answer: A — 1
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Q. If a^3 * b^2 = 64 and a = 2, what is the value of b? (2023)
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Solution
Substituting a = 2, we have 2^3 * b^2 = 64, which simplifies to 8b^2 = 64. Thus, b^2 = 8, leading to b = 4.
Correct Answer: B — 8
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Q. If a^x = b^y and a = b, what can be inferred about x and y?
A.
x = y
B.
x > y
C.
x < y
D.
x and y are unrelated
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Solution
If a = b, then a^x = b^y implies x must equal y for the equality to hold.
Correct Answer: A — x = y
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Q. If log_a(b) = c, which of the following is equivalent?
A.
a^c = b
B.
b^c = a
C.
c^a = b
D.
b^a = c
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Solution
The definition of logarithms states that if log_a(b) = c, then a raised to the power of c equals b, hence a^c = b.
Correct Answer: A — a^c = b
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Q. If the 2nd term of a GP is 8 and the 4th term is 32, what is the common ratio?
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Solution
Let the first term be a and the common ratio be r. Then, 2nd term = ar = 8 and 4th term = ar^3 = 32. Dividing gives r^2 = 4, so r = 2.
Correct Answer: A — 2
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Q. If the 2nd term of an arithmetic progression is 8 and the 5th term is 14, what is the 3rd term?
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Solution
Let the first term be a and the common difference be d. From the equations a + d = 8 and a + 4d = 14, we can find the 3rd term a + 2d = 10.
Correct Answer: A — 10
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Q. If the 3rd term of a GP is 27 and the common ratio is 3, what is the first term?
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Solution
Let the first term be a. Then, the 3rd term is ar^2 = 27. Thus, a * 3^2 = 27, giving a = 3.
Correct Answer: B — 9
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Q. If the 5th term of an arithmetic progression is 15 and the 10th term is 30, what is the common difference?
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Solution
Let the first term be a and the common difference be d. From the equations a + 4d = 15 and a + 9d = 30, we can find d = 3.
Correct Answer: A — 3
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Q. If the 6th term of an arithmetic progression is 30 and the 9th term is 45, what is the common difference?
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Solution
Let the first term be a and the common difference be d. From the equations a + 5d = 30 and a + 8d = 45, we can find d = 5.
Correct Answer: A — 5
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Q. If the 7th term of an arithmetic progression is 50 and the common difference is 5, what is the first term?
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Solution
Using the formula for the nth term, a + 6d = 50. Substituting d = 5 gives a + 30 = 50, hence a = 20.
Correct Answer: B — 30
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Q. If the equation 2x + 3y = 6 is transformed into slope-intercept form, what is the slope of the line?
A.
-2
B.
2
C.
-3/2
D.
3/2
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Solution
Rearranging the equation to y = -2/3x + 2 shows that the slope is -2/3.
Correct Answer: C — -3/2
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Q. If the equation of a line is given as y = mx + b, what does 'm' represent?
A.
The y-intercept
B.
The x-intercept
C.
The slope of the line
D.
The constant term
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Solution
'm' represents the slope of the line in the slope-intercept form of a linear equation.
Correct Answer: C — The slope of the line
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Q. If the first term of a GP is 7 and the common ratio is 3, what is the 6th term?
A.
567
B.
729
C.
243
D.
81
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Solution
The 6th term is given by 7 * 3^(6-1) = 7 * 243 = 1701.
Correct Answer: B — 729
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Q. If the first term of a harmonic progression is 1 and the common difference of the corresponding arithmetic progression is 2, what is the second term of the harmonic progression?
A.
1/2
B.
1/3
C.
1/4
D.
1/5
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Solution
The first term is 1, and the second term's reciprocal will be 1 + 2 = 3. Therefore, the second term is 1/3.
Correct Answer: A — 1/2
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Q. If the first term of a harmonic progression is 1 and the second term is 1/3, what is the third term?
A.
1/2
B.
1/4
C.
1/6
D.
1/8
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Solution
The reciprocals of the terms are 1, 3, and 1/x. The common difference is 2, so 1/x = 3 + 2 = 5, thus x = 1/5.
Correct Answer: C — 1/6
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