Develop speed and accuracy in arithmetic, algebra, geometry, percentages, ratios and other quantitative concepts.
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What is the value of (1/2) raised to the power of negative 2?
A population grew by 20% then decreased by 10%. If the original was 1000, what is the final population?
If variance of a data set is 25 what is the standard deviation?
In how many ways can the letters of MATHS be arranged?
solve: (7 − 2) × (6 ÷ 2) = ?
What is the value of (2+3i)(2-3i)?
What is the value of C(5 2)?
Find the average of 15, 25, 35, 45.
If log base 2 of x equals 5 what is x?
solve: (15 − 5) ÷ 2 × 3 = ?
The sum of an infinite geometric series with first term 1 and ratio 1/2 is?
The average of 7 numbers is 30. A new number 54 is added. Find the new average.
Find the roots of x² - 5x + 6 = 0
solve: [(6 + 4) × 2] − 3² = ?
A bag has 5 red and 3 blue balls. What is the probability of drawing 2 red balls?
What percentage is 18 out of 90?
Find the average of 50, 60, 70.
What is tan(A+B) equal to?