Quantitative Aptitude - Arithmetic Ability Questions

If 3x^2 + ax + 4 is perectly divisible by x - 5, then the value of a is :

What is the value of (cos 45 - 1/3) ?

The lengths of the two diagonals of a rhombus are 5 cm and 12 cm. Find its area (in cm2)

Krish is 5 years younger than Parthiv. Eight years ago three times the age of Krish was 10 more than twice the age of Parthiv. Find Krish's present age?

In ∆ ABC, the height CD intersects AB at D. The midpoints of AB and BC are P and Q respectively. If AD = 8 cm and CD = 6 cm, then the length of PQ is?

What is the average of all numbers between 8 and 74 which are divisible by 7?

ΔDEF is right angled at E. If secD = 25/7, then what is the value of cosecF ?

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