Quantitative Aptitude - Arithmetic Ability Questions

If x = (√2 + 1)/(√2 – 1), then what is the value of (x5 + x4 + x2 + x)/x3 ?

If cotA = x, then the value of x is

If ab-1b=cb-1c=ac-1a, then ac+ba+cb

If the selling price is Rs 855 after getting a discount of 5%, what was the marked price?

What is the value of 10% of 150% of 400?

The sum of two positive integers is 80 & difference between them is 20. Then what is difference of squares of those numbers ?

What is the value of x3-1x3+8 when 8x-8x-16=0 ?

A bank offers 5% compound interest per half year. A customer deposits Rs. 3200 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by way of interest is: