Quantitative Aptitude - Arithmetic Ability Questions

Solve the following : 80÷[48−56−(60−36÷12×4)]=?

In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. If he attempts all 60 questions and secures 130 marks, the no of questions he attempts correctly is :

Which value is closest to [5.168 x 4453 x 3.194 / 67.999 x 4224.017]

Calculate the area (in sq.cm) of a circle whose diameter is 14 cm.

What approximate value will come in place of the question mark(?) in the below question?

(47% of 1442  - 36% of 1412) + 63 = ?

Consider the following for real numbers α, β, γ and δ ?

1) sec α = 1/4

2) tan β = 20

3) cosec γ = 1/2

4) cos δ = 2

How many of the above statements are not possible?

If each edge of a cube is increased by 50%, find the percentage increase in Its surface area

Given w = -2, x = 3, y = 0 & z = -1/2. Find the value of 2(w2 + x2 + y2).