Quantitative Aptitude - Arithmetic Ability Questions

Find the HCF & LCM of 16, 24.

If the value of √42 is approximately 6.480, then what is the approximate value of √(6/7)?

A shopkeeper marks the price of an article at Rs. 320. Find the cost price if after allowing a discount of 10%, he still gains 20% on the cost price.

Volume of a cube is 512 cubic cm, find its total surface area? (Take π = 22/7)

In a Δ ABC, DE || BC. D and E lie on AB and AC respectively. If AB = 7 cm and BD = 3cm, then find BC:DE

Z’s present age is 55 years. If 11 years ago, C’s age was 1/11 of Z’s age, then after how many years C’s age will become 37 years?

In the following question, select the missing number from the given series.1 108, 81, 54, 27, ?

The ratio of the cost price and selling price of an article is 5 : 3. What is the loss percentage?