Quantitative Aptitude - Arithmetic Ability Questions

The number of pupils of a class is 55. The ratio of the number of male pupils to the number of female pupils is 5: 6. The number of female pupils is

If cos3A = X, then value of X?

If a3 + b3 = 19 and ab = -6 , then what is the value of a + b?

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

The flight fare between two cities is increased in the ratio 9:11. What is the increase (in Rs) in the fare, if the original fare was Rs. 18,000?

In a school 60% of the students are girls. If number of boys is 480, then what is the total number of students in the school?

The areas of a circle and square are equal. What is the square of the ratio of length of diameter to the length of diagonal?

Robin can do a work in 10 hours. Pradeep and Robin together can do the same work in 4 hours. Pradeep and Nitin together can do the samework in 5 hours. In how many hours Nitin alone can complete the same work?