Mathematics — All MCQs
1905 questions available
Q1881.If the price of one mango is 15 rupees, how many mangoes can you buy with 120 rupees?
Correct Answer: C
Calculated as: Total budget / Price per mango = 120 / 15 = 8 mangoes.
Q1882.What is 55% of 320?
Correct Answer: D
Calculated as: (55 / 100) × 320 = 176.
Q1883.What is (a² - b²) equal to?
Correct Answer: C
The difference of squares formula states: a² - b² = (a+b)(a-b).
Q1884.Which value of x will make the equation true: 3^x = 243?
Correct Answer: B
Since 243 can be factored as 3 × 3 × 3 × 3 × 3 = 3⁵, equating the powers of 3^x = 3⁵ gives x = 5.
Q1885.The volume of a rectangular solid is 1,440 cubic inches. If the height is 3 inches, what could be its length and width?
Correct Answer: C
Volume = length × width × height. Since height is 3: Volume = length × width × 3 = 1440. Thus, length × width = 480. Among the options, 10 inches by 48 inches gives 10 × 48 = 480.
Q1886.What is the value of 6! (Factorial of 6)?
Correct Answer: C
Calculated as: 6! = 6 × 5 × 4 × 3 × 2 × 1 = 720.
Q1887.What is 30% of 30?
Correct Answer: C
Calculated as: (30 / 100) × 30 = 9.
Q1888.What is 9% of 9?
Correct Answer: A
Calculated as: (9 / 100) × 9 = 0.81.
Q1889.What is 20% of 170?
Correct Answer: B
Calculated as: (20 / 100) × 170 = 34.
Q1890.A quadrilateral has how many sides?
Correct Answer: C
By definition, a quadrilateral is a 4-sided polygon.
Q1891.Which of the following is the smallest number?
Correct Answer: A
Comparing the decimal values: 0.40 < 0.45 < 5.00 < 5.50. The smallest is 0.4.
Q1892.What is the value of 6² - 4²?
Correct Answer: B
Calculated as: 6² - 4² = 36 - 16 = 20.
Q1893.In a school, there are 150 boys and 100 girls. What is the ratio of boys to girls in simplest form?
Correct Answer: B
Ratio of boys to girls = 150 : 100. Divide both by their GCD (50): 150÷50 = 3; 100÷50 = 2. Simplest ratio is 3:2.
Q1894.What is the missing number representing sides of a hexagon in: triangle (3), rectangle (4), hexagon (?)
Correct Answer: D
A triangle has 3 sides, a rectangle has 4 sides, and a hexagon has 6 sides.
Q1895.Solve for x in the equation: 2x + 5 = 13.
Correct Answer: C
Subtract 5 from both sides: 2x = 8. Divide both sides by 2: x = 4.
Q1896.If the cost of one dozen eggs is Rs. 250, what is the cost of 30 eggs?
Correct Answer: B
1 dozen = 12 eggs. Cost per egg = 250 / 12 = Rs. 20.833. Cost for 30 eggs = 30 × 20.833 = Rs. 625.
Q1897.Simplify the expression: (7 - √2)(7 + √2).
Correct Answer: B
Using the difference of squares identity (a - b)(a + b) = a² - b²: (7)² - (√2)² = 49 - 2 = 47.
Q1898.If you pay 22.90 dollars for a DVD that includes a 7% sales tax, what is the price of the DVD before sales tax?
Correct Answer: A
Let the price before tax be x. The price including a 7% tax is 1.07 * x = 22.90. Solving for x yields x = 22.90 / 1.07 = 21.40 dollars.
Q1899.If Jack needs 2.5 pints of cream to make a dessert, how many pints will he need to make 3 desserts?
Correct Answer: A
Multiply the cream required for one dessert by the number of desserts: 2.5 pints * 3 = 7.5 pints.
Q1900.A triangle that has 3 equal angles is called:
Correct Answer: C
A triangle with three equal angles is called an equilateral triangle. Each angle in an equilateral triangle is exactly 60 degrees, and all three sides are equal.