Quantitative Aptitude - Arithmetic Ability Questions

Select the odd word/letters/number/number pair from the given alternatives.

Select the odd word/letters/number/number pair from the given alternatives.

If ab+ba = -1, then the value of a2b-b2a is

What is the value of sin (90° + 2A)[4 – cos2(90° – 2A)]?

What is the value of [(sin 7x – sin 5x)÷(cos 7x + cos 5x)] – [(cos 6x – cos 4x)÷(sin 6x + sin 4x)]?

The sum of a non-zero number and ten times its reciprocal is 7. Find the number.

The average of 9 observations was found to be 35. Later on, it was detected that an observation 81 was misread as 18. The correct average of the observations is

Sum of four times a fraction and 6 times its reciprocal is 11. What is the fraction?