Quantitative Aptitude - Arithmetic Ability Questions

The length of the common chord of two intersecting circles is 12 cm. If the diameters of the circles are 15 cm and 13 cm, then what is the distance (in cm) between their centers?

A student, by mistake, wrote 64 in place of 46 as a number at the time of finding the average of 10 given numbers & got the average as 50. The correct average of the numbers is

Instead of multiplying by 25, a student multiplies that number by 52 and gets 324 more than correct answer. Then that number is

ΔABC is right angled at B. BD is its altitude. AD = 4 cm and DC = 12 cm. What is the value of AB (in cm)?

Select the odd word/letters/number/number pair from the given alternatives.

Identify the odd one out from the following:

If a3 + b 3 = 35 and ab = 6, then what is the value of a + b?

The point R(a,b) is first reflected in origin to R1 and R1 is reflected in x-axis to (-3,4). The co-ordinates of point R are