Develop speed and accuracy in arithmetic, algebra, geometry, percentages, ratios and other quantitative concepts.
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What is the slope of a line perpendicular to y = 2x + 3?
What is the value of (3² + 4²)?
Average weight of 20 boys is 55 kg and of 15 girls is 50 kg. Find the average weight of all students.
A sum doubles itself in 8 years at simple interest. What is the rate?
If x + 5 = 12 what is the value of x?
Differentiate f(x) = sin(x) + cos(x) with respect to x
A pipe fills a tank in 6 hours another empties it in 8 hours. Both open: how long to fill?
solve: (10 − 4) × (3 + 1) = ?
How many prime numbers are between 1 and 50?
What is the sum of first 10 natural numbers?
Find the average of 100, 150, 200, 250.
Rationalize the denominator: 1 divided by √2
solve: (20 − 8) ÷ 4 + 5 = ?
A mixture of 40 liters has milk:water ratio 3:1. How much water to add for ratio 3:2?
Two numbers are in ratio 5:3 and their sum is 40. What is the larger number?
What is the geometric mean of 4 and 16?
What is the perimeter of a rectangle with length 8 cm and width 5 cm?
What is the discriminant of x² - 5x + 6 = 0?