Quantitative Aptitude - Arithmetic Ability Questions

$$\begin{gathered} ∆ABC is similar to ∆PQR. If ratio of perimeters of ∆ABC and ∆PQR is 1:2 and \\ if PQ = 10 cm then what is the length of AB (in cm)? \end{gathered}$$

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

If aq-r+br-p-cp-q, then find the value of (pa + qp + rc) is

What is the quotient when 7251 is divided by 66?

There were 24 studentsina class. One of them, who was 18 years old, left the class and his place was filled up by a new comer.Ifthe average of the class was thereby lowered by 1 month, the age of new comer is-

A mother is five times older than her daughter. After 5 years, she would be 3 times older than her daughter. Find the mother's present age.

If after giving a discount of 18%, a book is sold for Rs 1599, then what will be the marked price (in Rs) of the book?

In a cricket match, the scores of the players are considered such that coefficient of variation of scores is 16 and mean is 25 then the variance is