Quantitative Aptitude - Arithmetic Ability Questions

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

Type 1 workers can do three times the work of Type 2 workers. Twelve Type 1 workers can complete a task in 10 days. How many days would it have taken 4 Type 1 and 8 Type 2 workers to complete the same task?

The difference between simple interest on a certain sum at the rate of 6% per annum for 5 years and 6 years is 25.8. What is the sum (in Rs)?

If xy (x + y) = m, then the value of x3 + y3 + 3m is:

If 1 + secA = x, then the value of x is

When a number is increased by 120, it becomes 130% of itself. What is the number?

If 4/5th of 6/7th of a number is 216, then 8/9th of that number will be

In the following question, select the odd letters from the given alternatives.