Quantitative Aptitude - Arithmetic Ability Questions

The ratio of three numbers is 2 : 5 : 7. If their product is 1890, then what is the sum of the three numbers?

What is the value of sin ­-300°?

√(1 + tan2A)/tanA is equal to

What is the difference (in Rs) between the compound interests on Rs. 4000 for 1 year at 12% per annum compounded yearly and half-yearly?

A sum of Rs 6000 becomes Rs 7200 in 2 years, when invested in a scheme of simple interest. If the same sum is invested in a scheme of compound interest with same yearly interest rate (compounding of interest is done yearly), then what will be the amount (in Rs) after 3 years?

Three numbers are in the ratio of 3:5:10 and their LCM is 630. Find their HCF.

What is the value of sec -2π/3 ?

If (6x ­- 5) = (4x + 7), then the numerical value of (x + 1)3  is