Quantitative Aptitude - Arithmetic Ability Questions

What should come in place of question mark (?) in the following question? (You do not have to calculate the exact value.)

(√80.997 - √25.001) × (√120.98 + √16.02) = ?

The length of a median of an equilateral triangle is 12√3 cms. Then the area of the triangle is

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

If (X/4) = (Y/5) = (Z/9), then what is X : Y : Z?

If (5/9 of x) ­- (2/5 of 9/4) equals ­ -4/5 then find x.

In the first 40 overs of a 50 over innings, the run rate was 4.8 runs/over. What is the required run rate in the remaining 10 overs to reach the target of 241 runs?

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

What is the value of [(tan 5θ + tan 3θ)/4 cos 4θ (tan 5θ – tan 3θ)]?