Quantitative Aptitude - Arithmetic Ability Questions

What is the value of cos2A/(1 + sinA)?

The average revenues of 7 consecutive years of a company is Rs 79 lakhs. If the average of first 4 years is Rs 74 lakhs and that of last 4 years is Rs 86 lakhs, what is the revenue for the 4th year?

The sum of 15 observations of a data is (434 + x). If the mean of the data is x, then the value of x is

What is the difference of the factors of the expression x2 + (1/x2) – 6?

If cos4θ-sin4θ=13 then the value of tan2θ is

The ratio of cost price and selling price 25:26. The percent of profit will be

If ΔABC is an equilateral triangle of side 16 cm, then the length of altitude is

A square playground measures 1127.6164 sq.m. If a man walks 2 9/20 m a minute, the time taken by him to walk one round around it is approximately.