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

Calculate the value of 0.77777 + 0.7777 + 0.777 + 0.77 + 0.7 + 0.07.

What is the value of 10.2+10.02+10.002+... upto 9 terms

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

Peter belongs to Town A and Paul belongs to Town B. They start their journeys towards each others towns following the same route at the same time. They meet somewhere on the way and continue with their journeys. After meeting Paul, Peter takes another 13.5 hrs to reach his destination while Paul takes another 6hrs to reach Peter's town. If Peter travelled at the speed of 30 kmph, what was Paul's speed in kmph?

A man bought 25 crates of oranges for Rs. 10,000. He lost 5 crates. In order to earn a total profit of 25% of the total cost, he would have to sell each of the remaining crates at