Quantitative Aptitude - Arithmetic Ability Questions

Find the median, mode and mean of 9, 5, 8, 9, 9, 7, 8, 9, 8.

There are two numbers such that the first number is half of the second number. If their average is 57, then what is the first number?

A sump is filled by three tankers with uniform flow. The first two tankers operating simultaneously fill the sump in the same time during which the sump is filled by the third tanker alone. The second tanker fills the sump 5 hours faster than the first tanker and 4 hours slower than the third tanker. The time required by the first tanker is:

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

What is the value of (3/5 + 7/9)?

If secA/√(sec2A ­- 1) = x, then value of x is

Which of the following quadratic equations has real roots?

In ΔPQR, S and T are points on side PQ and PR respectively. ST is parallel to QR. If S divides PQ in the ratio 4:1 and length of QR is 15 cm,what is the length of ST?