A mixture contains 12% copper. How many kg of mixture is required to get 69 kg of copper?
Correct answer is: B. (B) 575 kg
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Mathematics Mcqs
Mathematics MCQs include a wide range of solved multiple-choice questions from basic arithmetic to advanced mathematics. These questions cover topics such as Algebra, Geometry, Trigonometry, Calculus, Probability, Statistics, and Arithmetic. They are especially designed for students and candidates preparing for PPSC, FPSC, CSS, PMS, NTS, KPPSC, SPSC, and other competitive exams. Practicing these MCQs helps improve problem-solving skills, numerical ability, and analytical reasoning, making them ideal for both academic learning and job test preparation.
Two numbers are respectively 20% and 50% more than a third number. These two numbers are in the ratio:
Correct answer is: B. (B) 2:5
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Factorization of the expression y^2 + y-6 is?
- (y+2)(y-3)
- (y+3)(y-2)
- (y+3)(x-4)
- None
Explanation
To factorize the expression y^2 + y – 6, we need to find two numbers whose product is -6 and whose sum is 1 (the coefficient of the middle term).
These numbers are 3 and -2, so we can write:
y^2 + y – 6 = (y + 3)(y – 2)
The average of 6 numbers is 30. If the average of the first four is 25 and that of the last three is 35, the fifth number is:
Correct answer is: B. (B) 30
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The civil war (1992-2002) is also known as the black decade.
A) Tajikistan
(B) Algerian
(C) Sudanese
(D) None of these
The correct answer is (B) Algerian
The Algerian civil war (1992-2002) is also known as the Black Decade.
It was a period of intense violence.
It was conflict between the government and Islamist insurgents (11 January 1992 to 8 February 2002)