Quantitative Aptitude - Arithmetic Ability Questions

Find the LCM of 12, 16, 20 and 24.

What is that least digit that must be added to the product 5786 × 5784 to make it a perfect square?

The average revenues of 9 consecutive years of a company is Rs 65 lakhs. If the average of first 5 years is Rs 60 lakhs and that of last 5 years is Rs 72 lakhs, find the revenue for the 5th year.

The line segment AB intersects the straight line CD at B; AB will be smallest when ∠ ABD (in degrees) is

The value of 1+tan2∅(1-sin2∅) is

A person goes from point N to P and comes back. His average speed for the whole journey is 60 km/hr. If his speed while going from N to P is 40 km/hr, then what will be the speed of the person (in km/hr) while coming back from P to N?

Rs. x invested at 9% simple interest per annum for 5 years yields the same interest as that on Rs. y invested at 6.25% simple interest per annum for 8 years. Find x:y.

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