Quantitative Aptitude - Arithmetic Ability Questions

The perimeter and the breadth of a rectangle are 82 cm and 20 cm respectively. Calculate the length of its diagonal (in cm).

The number of sides of a regular polygon whose exterior angles are each 40 deg is

In ΔPQR, PQ = PR = 18 cm, AB and AC are parallel to lines PR and PQ respectively. If A is the mid-point of QR, then what is the perimeter (in cm) of quadrilateral ABPC?

What is the reflection of the point (5 , -1) in the line y = 2?

What is the value of Cot 60°- Cos 45°?

The average age of 36 students in a group is 14 years. When the teacher's age is included in it, the average increases by one. The teacher's age in years is

A man has some hens and some cows. If the total number of heads of hens and cows together is 50 and the nunber of feet of hens and cows together is 142, then the number of cows is

In the series 5442673314884743581,the number of 4s that are completely divisible by the number on their right but not divisible by the number on their left is