Class 10 Math Maestros: Conquer The Quiz Challenge!
Reviewed by Janaisa Harris
Janaisa Harris, BA (Mathematics)|
High School Math Teacher
Review Board Member
Janaisa Harris, an experienced educator, has devoted 4 years to teaching high school math and 6 years to tutoring. She holds a bachelor's degree in Mathematics (Secondary Education, and Teaching) from the University of North Carolina at Greensboro and is currently employed at Wilson County School (NC) as a mathematics teacher.
, BA (Mathematics)
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Ready to brush up on your math skills? Dive into our Class 10 Math Quiz and put your knowledge to the test! Whether you're solving equations, tackling geometry problems, or mastering algebraic expressions, this quiz has got it all covered. Get ready to tackle questions that will challenge your understanding of key mathematical concepts taught in class 10.
The Class 10 Math Quiz is designed to test your understanding of various mathematical concepts typically covered in the curriculum for 10th-grade students. By taking this quiz, you can assess your problem-solving skills, logical reasoning abilities, and proficiency in applying mathematical formulas Read moreand techniques. This quiz serves as an excellent tool for self-assessment and preparation for exams, including standardized tests and board examinations. It offers a variety of questions ranging from basic to advanced levels, allowing you to gauge your strengths and identify areas that may require further practice and revision. So, grab a pen and paper, and let's see how well you fare in this fun and interactive math quiz!
Class 10 Math Questions and Answers
1.
Solve for x : 2x + y = 8, y= - 6
A.
6
B.
4
C.
7
D.
16
Correct Answer
C. 7
Explanation The given equation is
2x + y = 8,
Plug in y = - 6
2x-6 = 8
Add 6 on both sides of the equation 2x = 8 + 6 => 14
To get x by itself, divide 2 on both sides of the equation
x = 14/2 = 7
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2.
When a point is observed, the angle formed by the line of sight with the horizontal level where the point being viewed is above the horizontal plane is known as:
A.
Angle of triangle
B.
Angle of depression
C.
Angle of elevation
D.
None of the these
Correct Answer
C. Angle of elevation
Explanation The angle formed by the line of sight with the horizontal level when the point being viewed is above the horizontal plane is known as the angle of elevation. This geometric concept is commonly used in various fields such as surveying, navigation, astronomy, and architecture to describe the angle at which an observer must look upwards to see an object that is higher than the level at which the observer is located.
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3.
The probability of an event can't be ________________.
A.
Positive
B.
Negative
C.
Both A and B
D.
None of the above
Correct Answer
B. Negative
Explanation The probability of an event represents the likelihood of that event occurring and is expressed as a number between 0 and 1, inclusive. A probability of 0 means the event will not occur, while a probability of 1 indicates certainty that the event will occur. Negative probabilities do not exist in this context as they fall outside the defined range and have no meaningful interpretation within the theory of probability.
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4.
In a lottery, there are 10 prizes and 20 blanks. What is the probability of getting a prize?
A.
1/2
B.
1
C.
1/3
D.
1/10
Correct Answer
C. 1/3
Explanation In the context of a lottery ticket, where the total possible outcomes are calculated by adding the outcomes of not getting a prize (20) to the outcomes of getting a prize (10), the sum equals 30 possible outcomes. To find the probability of winning a prize, we divide the number of favorable outcomes (getting a prize) by the total number of outcomes. This calculation, 10 divided by 30, simplifies to 1/3. Therefore, the probability of securing a prize when purchasing a single ticket in this scenario is 1/3.
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5.
Given that sin A = 1/2 and cos B= 1/ then the value of (A+B) is :
A.
30 Degree
B.
45 Degree
C.
75 Degree
D.
15 Degree
Correct Answer
C. 75 Degree
Explanation sin A = sin 30 = 1/2 => A = 30 degree
cos B = cos 45 = 1/ /2 => B = 45 degree
So, A+B => 30 +45 = 75 degree
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6.
The HCF of two numbers, a and b, is 30, while their LCM is 45. What is the value of (a x b)?
A.
1250
B.
1255
C.
1350
D.
1355
Correct Answer
C. 1350
Explanation HCF (a,b) = 30
LCM (a,b) = 45
We know that, HCF (a,b) x LCM (a,b) = a x b
Thus, a x b => 30 x 45 = 1350
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7.
Which term of the progression 4,9,14,…. is 109?
A.
12
B.
18
C.
20
D.
22
Correct Answer
D. 22
Explanation tn= a+(n-1)d
Subtract the first term, 4, from 109: 109 - 4 = 105
Divide the result by the common difference, which is 5: 105 / 5 = 21
Add 1 to account for the progression starting at term 1: 21 + 1 = 22
So, the 22nd term of the sequence is 109.
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8.
1+2+…+k=55, what is the value of k?
A.
10
B.
11
C.
12
D.
13
Correct Answer
A. 10
Explanation Start with the Sum Formula: We begin with the formula for the sum of an arithmetic series, which is given as:
Sn=n/2(a1+an)Snâ€‹=2nâ€‹(a1â€‹+anâ€‹)
Snâ€‹ represents the sum of the series.
n is the number of terms in the series.
a1â€‹ is the first term of the series.
anâ€‹ is the nth term of the series.
Plug in the Known Values: In this problem:
Snâ€‹ is 55 because we want the sum to be equal to 55.
a1â€‹ is 1 because the first term in the series is 1.
So, we have:
55=k/2(1+an)55=2kâ€‹(1+anâ€‹)
Simplify: Since a1=1, we simplify further:
55=k/2(1+k)
Multiply by 2 to Eliminate Fraction: To get rid of the fraction, we multiply both sides by 2:
110=k(1+k)
Quadratic Equation: We now have a quadratic equation in the form k2+k−110=0
Factor or Use Quadratic Formula: To solve this equation, you can either factor it or use the quadratic formula. Factoring it, we get:
(k+11)(k−10)=0
Solve for k: Set each factor equal to zero and solve for k:
k+11=0 → −11
k−10=0 → k=10
Choose the Positive Solution: Since we're looking for a positive value of k that represents the sum of the series, the value of k is 10.
So, the value of k in the equation 1+2+…+k=55 is 10, which means that the sum of the first 10 positive integers is equal to 55.
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9.
What is the 10th term of the sequence whose nth term is 3n-2?
A.
28
B.
42
C.
35
D.
32
Correct Answer
A. 28
Explanation To find the 10th term of the sequence where the nth term is described by the formula (3n - 2), you can substitute 10 for n in the formula:
Multiply 3 by 10: 3 * 10 = 30
Subtract 2 from the result: 30 - 2 = 28
Therefore, the 10th term of the sequence is 28.
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10.
If cot A = 12/5, then the value of (sin A + cos A) x cosec A is :
A.
13/5
B.
17/5
C.
14/5
D.
1
Correct Answer
B. 17/5
Explanation To solve for the value of (sin A + cos A) x cosec A given that cot A = 12/5, we need to first find the values of sin A, cos A, and cosec A.
Step 1: Calculate sin A and cos A From the cotangent identity, cot A = cos A / sin A, and given cot A = 12/5, we can express cos A and sin A using a right triangle where:
The adjacent side (to angle A) = 12 (corresponding to cos A)
The opposite side (to angle A) = 5 (corresponding to sin A)
To find the hypotenuse (h), we use the Pythagorean theorem: Hypotenuse squared = Adjacent squared + Opposite squared h squared = 12 squared + 5 squared h squared = 144 + 25 h squared = 169 h = 13
Thus, the values of sin A and cos A are: sin A = Opposite / Hypotenuse = 5 / 13 cos A = Adjacent / Hypotenuse = 12 / 13
Step 2: Calculate cosec A cosec A = 1 / sin A = 13 / 5
Step 3: Calculate (sin A + cos A) x cosec A sin A + cos A = 5/13 + 12/13 = 17/13 (sin A + cos A) x cosec A = 17/13 x 13/5 = 17 x 13 / 13 x 5 = 17 / 5
Therefore, the value of (sin A + cos A) x cosec A is 17/5.
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Janaisa Harris |BA (Mathematics)|
High School Math Teacher
Janaisa Harris, an experienced educator, has devoted 4 years to teaching high school math and 6 years to tutoring. She holds a bachelor's degree in Mathematics (Secondary Education, and Teaching) from the University of North Carolina at Greensboro and is currently employed at Wilson County School (NC) as a mathematics teacher.
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