Quantitative Aptitude - Arithmetic Ability Questions

What is the value 32cos 39sin 51-sin239 + sin251

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

If a4 + 1 = [a2 /b2 ] (4b2 – b4 – 1), then what is the value of a4 + b4?

If 4x -7 < x - 2 and 5x +2/3 ≥ 3x + 1; then x can take which of the following values?

At least one diagonal bisects the other in a _____.

The ratio of cost price and selling price 25:26. The percent of profit will be

When a number x is divided by a divisor it is seen that the divisor = 4 times the quotient = double the remainder. If the remainder is 80 then the value of x is

The salary of a person is reduced by 20% . To restore the previous salary, his present salary is to be increased by