Quantitative Aptitude - Arithmetic Ability Questions

Working 5 hours a day, Shivam can read a book in 24 days. How many hours a day should he work so as to finish the same work in 8 days?

The product of two numbers is 48. If one number equals "The number of wings of a bird plus 2 times the number of fingers on your hand divided by the number of wheels of a Tricycle". Then the other number is

a, b and c are 3 values, such that a + b = 5, b + c = 7.5 and c + a = 8.5. What will be the average of these values?

What is the value of sin 300°?

If √(1 - cos2A) = x, then the value of x is

What is the simplified value of (cos4 A – sin4 A)?

What is the least number that when divided by 63 and 105 leaves remainder 4 in each case?

In a week, how many times are the hands of a clock at right angles with each other?