Quantitative Aptitude - Arithmetic Ability Questions

If P = 7 + 4√3 and PQ = 1, then what is the value of 1/P2 + 1/Q2?

Reduce 2530/1430 to lowest terms.

A sells a watch to B and makes a loss of 12%. B makes a profit of 12.5% by selling the watch to C. If A sells the watch to B at the cost of which C purchased it, then the percentage of loss or profit of A will be,

A school has 8 periods of 45 minutes each, every day. How long will each period be if the school has to have 9 periods everyday, assuming the working hours to be the same?

A and B together can complete a piece of work in 12 days. They worked together for 5 days and then A alone finished the rest work in 14 days. A alone can complete the work in _____.

Two students appeared for an examination. One of them secured 21 marks more than the other and his marks were 80% of the sum of their marks. The marks obtained by them are

The average (arithmetic mean) amount of savings of ten students is Rs. 600. Three of the students have no savings at all and each of the others have at least Rs. 250 including Nihar, who has exactly Rs. 1300. The largest amount, in Rs., that any one student could have is

Reflection of the point (2,-4) in the origin is