Quantitative Aptitude - Arithmetic Ability Questions

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?

Which one is the largest among the fractions (5/113), (7/120), (13/145) and (17/160)?

Let O be the orthocentre of the triangle ABC. If ∠BOC = 150°, Then ∠BAC is

If √(1 - cos2A) = x, then the value of x is

If cotA/√(1 + cot2A) = x, then the value of x is

In the following question, select the odd word from the given alternatives.

In the following question, select the odd word from the given alternatives.

The upstream speed of the boat is 40 kmph and the speed of the boat in still water is 55 kmph. What is the downstream speed of the boat?