Q. If the difference between the compound interest and simple interest on a certain sum of money for 2 years at 10% per annum is $50, what is the principal? (2000)
A.
$1000
B.
$1200
C.
$1500
D.
$2000
Show solution
Solution
The difference between compound interest and simple interest for 2 years is given by SI * (r/100)^2. Setting this equal to $50 and solving gives Principal = $1200.
Correct Answer: B — $1200
Learn More →
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
Show solution
Solution
Rearranging the equation to y = -2/3x + 2 shows that the slope is -2/3.
Correct Answer: C — -3/2
Learn More →
Q. If the equation of a line is given as 2x - 3y + 6 = 0, what is the y-intercept of the line?
Show solution
Solution
To find the y-intercept, set x = 0. The equation becomes -3y + 6 = 0, leading to y = 2.
Correct Answer: B — 2
Learn More →
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
Show solution
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
Learn More →
Q. If the equation of a line is y = mx + c, what does 'm' represent?
A.
The y-intercept
B.
The slope
C.
The x-intercept
D.
The distance
Show solution
Solution
'm' in the equation of a line represents the slope, which indicates the steepness and direction of the line.
Correct Answer: B — The slope
Learn More →
Q. If the expansion of (x + y)^n contains a term with x^4y^3, what can be inferred about n?
A.
n must be 7.
B.
n must be greater than 7.
C.
n must be less than 7.
D.
n can be any integer.
Show solution
Solution
The sum of the exponents in the term x^4y^3 is 4 + 3 = 7, hence n must be 7.
Correct Answer: A — n must be 7.
Learn More →
Q. If the exterior angle of a regular polygon is 30 degrees, how many sides does it have?
Show solution
Solution
The sum of the exterior angles of any polygon is 360 degrees. Therefore, the number of sides can be calculated as 360 / 30 = 12.
Correct Answer: B — 12
Learn More →
Q. If the first sentence of the paragraph is removed, what effect would it have on the overall meaning? (2023)
A.
It would enhance clarity.
B.
It would create confusion.
C.
It would have no effect.
D.
It would weaken the argument.
Show solution
Solution
Removing the first sentence would eliminate important context, weakening the argument presented.
Correct Answer: D — It would weaken the argument.
Learn More →
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
Show solution
Solution
The 6th term is given by 7 * 3^(6-1) = 7 * 243 = 1701.
Correct Answer: B — 729
Learn More →
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
Show solution
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
Learn More →
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
Show solution
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
Learn More →
Q. If the first term of a harmonic progression is 5 and the common difference of the corresponding arithmetic progression is 2, what is the second term?
Show solution
Solution
The first term in the arithmetic progression is 1/5, and the common difference is 2. Therefore, the second term in the harmonic progression is 1/(1/5 + 2) = 1/(2.2) = 5/11.
Correct Answer: D — 6
Learn More →
Q. If the first term of a harmonic progression is 5 and the second term is 10, what is the fourth term?
Show solution
Solution
The reciprocals are 1/5 and 1/10. The common difference is -1/10. The fourth term's reciprocal will be 1/10 - 1/10 = 1/25, hence the fourth term is 25.
Correct Answer: C — 25
Learn More →
Q. If the first term of a harmonic progression is 5 and the second term is 10, what is the third term?
Show solution
Solution
The reciprocals are 1/5 and 1/10. The common difference is -1/10. The third term's reciprocal will be 1/10 - 1/10 = 1/15, so the third term is 15.
Correct Answer: C — 25
Learn More →
Q. If the first term of a series is 10 and the last term is 50 with a common difference of 5, how many terms are in the series? (2023)
Show solution
Solution
The number of terms n can be calculated using the formula: n = (last - first) / difference + 1. Here, n = (50 - 10) / 5 + 1 = 9.
Correct Answer: B — 9
Learn More →
Q. If the first term of an arithmetic progression is 12 and the last term is 48, with a total of 10 terms, what is the common difference?
Show solution
Solution
The last term can be expressed as a + (n-1)d. Here, 48 = 12 + 9d. Solving gives d = 4.
Correct Answer: A — 4
Learn More →
Q. If the first term of an arithmetic progression is 7 and the common difference is -2, what is the 8th term?
Show solution
Solution
Using the formula for the nth term, a + (n-1)d = 7 + (8-1)(-2) = 7 - 14 = -7.
Correct Answer: A — -1
Learn More →
Q. If the first term of an arithmetic sequence is 5 and the common difference is 3, what is the 10th term? (2023)
Show solution
Solution
The nth term of an arithmetic sequence is given by a + (n-1)d. Here, a = 5, d = 3, n = 10. So, 5 + (10-1)3 = 32.
Correct Answer: A — 32
Learn More →
Q. If the first three terms of a harmonic progression are 1, 1/2, and 1/3, what is the common difference of the corresponding arithmetic progression?
A.
1/6
B.
1/3
C.
1/2
D.
1
Show solution
Solution
The reciprocals are 1, 2, and 3. The common difference is 2 - 1 = 1.
Correct Answer: A — 1/6
Learn More →
Q. If the first three terms of a harmonic progression are 1, 1/2, and 1/3, what is the fourth term?
A.
1/4
B.
1/5
C.
1/6
D.
1/7
Show solution
Solution
The reciprocals are 1, 2, and 3, which are in arithmetic progression. The next term in the sequence of reciprocals is 4, so the fourth term is 1/4.
Correct Answer: C — 1/6
Learn More →
Q. If the first three terms of a harmonic progression are a, b, and c, which of the following equations holds true?
A.
1/a + 1/b = 1/c
B.
1/a + 1/c = 1/b
C.
1/b + 1/c = 1/a
D.
1/a + 1/b + 1/c = 0
Show solution
Solution
In a harmonic progression, the reciprocals of the terms form an arithmetic progression, hence 1/a + 1/b = 1/c.
Correct Answer: A — 1/a + 1/b = 1/c
Learn More →
Q. If the graph of a function f(x) is symmetric about the y-axis, which of the following must be true?
A.
f(x) = f(-x) for all x.
B.
f(x) = -f(-x) for all x.
C.
f(x) is always positive.
D.
f(x) has a maximum value.
Show solution
Solution
A function that is symmetric about the y-axis satisfies the property f(x) = f(-x) for all x.
Correct Answer: A — f(x) = f(-x) for all x.
Learn More →
Q. If the graph of a function is symmetric about the y-axis, which of the following types of functions could it be?
A.
Linear function
B.
Odd function
C.
Even function
D.
Exponential function
Show solution
Solution
A function is symmetric about the y-axis if it is an even function, which satisfies the condition f(x) = f(-x).
Correct Answer: C — Even function
Learn More →
Q. If the HCF of 24 and 36 is 12, what is the LCM of these two numbers? (2023)
Show solution
Solution
Using the relation HCF * LCM = Product of the numbers, we have LCM = (24 * 36) / 12 = 72.
Correct Answer: A — 72
Learn More →
Q. If the HCF of two numbers is 5 and their product is 1000, what is their LCM? (2023)
A.
200
B.
100
C.
250
D.
150
Show solution
Solution
Using the relation HCF * LCM = Product of the numbers, we have LCM = 1000 / 5 = 200.
Correct Answer: A — 200
Learn More →
Q. If the LCM of three numbers is 180 and their HCF is 3, what is the product of the three numbers? (2023)
A.
540
B.
1800
C.
5400
D.
18000
Show solution
Solution
The product of the three numbers is equal to LCM * HCF^2. Therefore, 180 * 3^2 = 180 * 9 = 1620.
Correct Answer: C — 5400
Learn More →
Q. If the LCM of two numbers is 120 and their HCF is 10, what is the product of the two numbers? (2023)
A.
1200
B.
1000
C.
2400
D.
600
Show solution
Solution
The product of two numbers is equal to the product of their LCM and HCF. Therefore, 120 * 10 = 1200.
Correct Answer: A — 1200
Learn More →
Q. If the LCM of two numbers is 60 and their HCF is 4, what is the product of the two numbers? (2023)
A.
240
B.
120
C.
300
D.
180
Show solution
Solution
The product of two numbers is equal to the product of their LCM and HCF. Therefore, 60 * 4 = 240.
Correct Answer: A — 240
Learn More →
Q. If the least common multiple (LCM) of two numbers is 60 and their greatest common divisor (GCD) is 12, what is the product of the two numbers?
A.
720
B.
180
C.
120
D.
60
Show solution
Solution
The product of two numbers is equal to the product of their LCM and GCD. Therefore, 60 * 12 = 720.
Correct Answer: A — 720
Learn More →
Q. If the lengths of the diagonals of a rhombus are 10 cm and 24 cm, what is the area of the rhombus?
A.
120 cm²
B.
240 cm²
C.
60 cm²
D.
300 cm²
Show solution
Solution
The area of a rhombus can be calculated using the formula (1/2) × d1 × d2 = (1/2) × 10 × 24 = 120 cm².
Correct Answer: B — 240 cm²
Learn More →
Showing 361 to 390 of 1311 (44 Pages)