Develop speed and accuracy in arithmetic, algebra, geometry, percentages, ratios and other quantitative concepts.
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A population grew by 20% then decreased by 10%. If the original was 1000, what is the final population?
What is the value of (2+3i)(2-3i)?
A sum of Rs. 1080 is divided between A and B in the ratio 5:4. Find the difference between their shares.
solve: (2 + 3)² ÷ 5 + (4 × 2) = ?
solve: [(6 + 4) × 2] − 3² = ?
A bag has 5 red and 3 blue balls. What is the probability of drawing 2 red balls?
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?
solve: 3 × [(8 − 2) ÷ 3] + 4 = ?
A student needs 40% marks to pass out of 500 total marks. He scored 150. By what percentage did he fail?
Solve: x² + 4x + 4 = 0 and identify the nature of roots
What does a radian measure?
solve: 2³ + (7 − 4) × 3 = ?
If 90% of a number is 180, what is the number?
The sum of a geometric series with a=2 r=3 and 4 terms is?
Find the average of 7, 14, 21, 28, 35.
In a class 60% passed math 70% passed English and 20% failed both. What % passed both?
solve: 5² − [(6 + 2) ÷ 2] = ?
solve: (3 + 5) × 2² ÷ 4 = ?
What is the value of log base 2 of 32 plus log base 2 of 4?