Quantitative Aptitude - Arithmetic Ability Questions

There is a circular garden of radius 21 metres. A path of width 3.5 metres is constructed just outside the garden. What is the area (in metres2) of the path?

If Cos θ = 35/37 , then what is the value of Cot θ?

What is the reflection of the point (3,-5) in the origin?

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

When Bablu decreases the selling price of the shoes from Rs. 360 to Rs. 345, his loss increases by 4%. The cost price of the shoes is

If Mr. Raghav taught a total of 500 hours, then what is the difference in number of hours of teaching algebra and modern Maths?

If 15 persons can do a job in 30 days, then 30 persons with twice the efficiency can do the same job in how many days?

If x , y, and z are real numbers such that (x - 3)2 + (y - 4)2 + (z - 5)2 = 0 then (x+y+z) is equal to