Quantitative Aptitude - Arithmetic Ability Questions

If a + b = 10 and ab = 21, then the value of (a - b)2 is

In the given figure, AB is a diameter of the circle with center O and XY is the tangent at a point C. If ACX = 35 deg, then what is the value (in deg) of CAB?

If A : B = 1 : 4 and B : C = 2 : 3, then what is A : B : C?

What is the area (in sq cm) of a circle whose circumference is 26.4 cm?

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

A bank offers 10% compound interest per half year. A customer deposits Rs. 3600 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by way of interest is.

If a vendor sells apples at Rs 170 per kg he suffers 15% loss. If he sells at Rs 230 per kg, then what is his profit percentage?

A spaceship travels at 810 km/hr. How many metres does it travel in 1/5th of a second?