Quantitative Aptitude - Arithmetic Ability Questions

If cosθ1-sinθ+cosθ1+sinθ = 4, then the value of θ (0°<θ<90°)?

When x2+ax+b is divided by (x-1), the remainder is 15 and when x2+bx+a is divided by (x+1), the remainder is -1, then the value of a2+b2 is

If the edge of a cube is increased by 10%, then what will be the percentage increase in its volume ?

If x + √5 = 5 + √y, and x, y are positive integers, then the value of x+yx + y

Sum of a fraction and thrice its reciprocal is 31/6. What is the fraction?

What is the remainder, when 4x4 +10x3-20x2+90 is divided by (x+2) ?

The average weight of Shivshankar, Gopesh and Reena is 97 kg. If the average weight of Shivshankar and Gopesh is 93 kg and that of Gopesh and Reena is 82 kg, then the weight of Gopesh is

The marked price of an article is 60% more than its cost price. If the article is sold for Rs 300 after offering a discount of Rs 20, then what will be the profit percentage?