Quantitative Aptitude - Arithmetic Ability Questions

If 6x + 4(2-x) > 3x -2 > 5x/2 - x/4; then value of x is

What is the value of sin (90° + 2A)[4 – cos2(90° – 2A)]?

If 16% of an electricity bill is deducted, Rs 1806 is still to be paid. How much was the bill?

If a+bab=21 ,  then the value of (a-b) is

If x = [1/(√5 + √3)], y = [1/(√7 + √5)] and z = [1/(√7 + √3)], then what is the value of (x + y + z)?

The percent profit made when an article is sold for Rs. 78 is twice as much as when it is sold for Rs. 69, the cost price of the article is?

An engineering student has to secure 25% marks to pass. He gets 45 and fails by 45 marks. Find the maximum marks.

Among three numbers, the first is twice the second and thrice the third, If the average of three numbers is 517, then what is the difference between the first and the third number?