Quantitative Aptitude - Arithmetic Ability Questions

If a - b = 5 and a2 + b2 = 97, ab = ?

If 1 = 2, 3 = 6, 4 = 8, and + = -, what would be the value of 41 + 34 + 13 = ?

ΔDEF is right angled at E. If cosecD = 5/4, then what is the value of cosecF?

The area of a triangle ABC is 63 sq.units. Two parallel lines DE, FG, are drawn such that they divide the line segments AB and AC into three equal parts. What is the area of the quadrilateral DEGF?

The effective annual rate of interest corresponding to a nominal rate of 19% per annum payable half­yearly is:

Choose the one which is different or odd from the following options?

If 5 -­ x > 1 + 3x and 5 + 5x ≥ 2 + 2x; then x can take which of the following values?

The rate of discount on an article whose marked price is Rs. 170 and selling price is Rs. 130?