Quantitative Aptitude - Arithmetic Ability Questions

The sum of three consecutive natural numbers each divisible by 5, is 225. The largest among them is

If a is positive and a2+1a2 = 7, then a3 + 1a3 = ?

Iftan 450=cot∅, then the value of ∅, in radians is 

For an article the profit is 170% of the cost price. If the cost price increases by 20% but the selling price remains same, then what is the new profit percentage?

Given: 5x -3(2x-7) > 3x - 1 < 7 + 4x; then x can take which of the following values?

If 14.35 - (1.956 - x ) - 83.92 = 3.858 then what is the value of x?

If cos 135° = x, then the value of x is

What is the value of z2+1z2 when z = 5+26 ?