Develop speed and accuracy in arithmetic, algebra, geometry, percentages, ratios and other quantitative concepts.
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The average of 5 numbers is 20. A new number 32 is added. Find the new average.
The average of 5 consecutive even numbers is 20. What is the largest number?
solve: 9 − 3 × 2 + 4 = ?
What is the inverse of the 2x2 matrix with rows [1 2] and [3 4]?
A sum of Rs. 2250 is divided between A and B in the ratio 4:5. Find A's share.
What is the value of log base 10 of 1000?
What is 30% of 150 plus 10% of 50?
If f(x) = 2x² + 3x - 5 what is f(2)?
A shopkeeper buys an item for Rs 200 and sells it for Rs 250. What is the profit percentage?
Find the average of 12, 18, 24, 30, 36.
A and B together do a job in 12 days. A alone takes 18 days. How long does B take alone?
solve: 7 + (6 − 2) × 3 = ?
What is the slope of a line perpendicular to y = 2x + 3?
A sum of Rs. 2100 is divided between A and B in the ratio 4:3. Find A's share.
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.