Quantitative Aptitude - Arithmetic Ability Questions

In the following question, select the odd number group from the given alternatives.

Select the odd number from the given alternatives.

On a ground , there is a vertical tower with a flagpole on its top . At a point 9 m away from the foot of the tower , the angles of elevation of the top and bottom of the flagpole are 60° and 30° respectively . The height of the flagpole is

If sinθ+cosθsinθ-cosθ=3,then the value of sin4θ-cos4θ is

If Tan θ = 4/3, then what is the value of Sin θ?

What is that least number that must be added to the product 684 × 686 to make it a perfect square?

Two fractions are such that their product is ­4 and sum is ­32/15. Find the two fractions.

Seven years ago, the age of Sahil was equal to the present age of Nihal. Sum of Sahil's age 5 year ago and Nihal's age 6 years later is 58 years. If Ruchi is 4 years elder to Sahil, then what will be Ruchi's age (in years) after 10 years?