Quantitative Aptitude - Arithmetic Ability Questions

Average of the marks of 132 students of a college is 40. If the average of the marks of the passed students is 42 and the average of the marks of the failed students is 20, then what will be the respective ratio of the total marks of passed students and the total marks of failed students?

Two chords AB and PQ of a circle intersect at D inside a circle. If AD = 4 cm, DB = 6 cm, QD = 3 cm, the length of PQ is equal to

The circumference of a circle is 110 cm. Find its radius (in cm).

Find the value of  x3 - y3, if x - y = 4 and xy = 12.

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

In the following question, select the odd number group from the given alternatives.

√[(1 ­ sinA)/(1 + sinA)] is equal to?

The sum of 2xy(3x + 4y - 5z) and 5yz(2x - 3y) is