Quantitative Aptitude - Arithmetic Ability Questions

The area of a rectangle in 60 sq.cm and its perimeter is 34 cm, then the length of the diagonal is

What approximate value should come in place of the question mark (?) in the following questions? (You are not expected to calculate the exact value.)

21.003 × 39.998 –209.91 = 126× ?

What is the value of (-7776)25

Value of (4a2+ 12ab + 9b2)/(2a + 3b) is

Sum of twice a fraction and its reciprocal is 17/6. What is the fraction?

In ΔABC measure of angle B is 900. If cotA = 8/15, and AB = 0.8cm, then what is the length (in cm) of side BC?

If the selling price of an item is Rs 1000 after getting a discount of 20%, then what was the marked price (in Rs)?

If 3/4 of the weight of a brick is 7/8 kg, then 5/7 of the weight of the brick will be