Quantitative Aptitude - Arithmetic Ability Questions

The angles of depression of two ships from the top of a light house are 45° and 30° toward east. If the ships are 200m apart, the height of the light house is (take √3=1.73)

The initial ratio of sugar to flour in a dough was 2 : 7. To 9 kg of the dough John added more sugar to make the sugar to flour ratio 2 : 5. How much sugar did John later add?

In ∆ ABC, the height CD intersects AB at D. The midpoints of AB and BC are P and Q respectively. If AD = 8 cm and CD = 6 cm, then the length of PQ is?

α and β are the roots of the quadratic equation x2 – x – 1 = 0. What is the value of α8 + β8?

Amit's age is four times the age of Babli. Babli's age is three times the age of Priya. If the present age of Priya is 5 years, what is the present age (in years) of Amit?

Select the odd letters from the given alternatives.

What is the value of sec -2π/3 ?

What is the simplified value of (sin A – cosec A)(sec A – cos A) (tan A + cot A)?