Develop speed and accuracy in arithmetic, algebra, geometry, percentages, ratios and other quantitative concepts.
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What is the value of (2+3i)(2-3i)?
A price dropped from 250 to 200. What is the percentage decrease?
solve: (2 + 3)² ÷ 5 + (4 × 2) = ?
A sum of Rs. 1400 is divided between A and B in the ratio 3:4. Find the difference between their shares.
What percentage is 18 out of 90?
A sum of Rs. 1500 is divided between A and B in the ratio 4:5. Find the difference between their shares.
What is tan(A+B) equal to?
Evaluate the integral of x dx from 0 to 4
solve: 3 × [(8 − 2) ÷ 3] + 4 = ?
What is the value of i² where i is the imaginary unit?
solve: (6 + 2)² ÷ 8 = ?
Solve: x² + 4x + 4 = 0 and identify the nature of roots
solve: (8 + 2) × 2 − 6 = ?