Quantitative Aptitude - Arithmetic Ability Questions

Which one of the following combination of measurements can form the sides of a triangle?

10 people could complete a task in 8 days. After 4 days, 2 of the workers left. How many days from then did it take to complete the task?

The HCF of 20, 28 and 48 is

Select the odd word/letters/number/number pair from the given alternatives.

From the top of a platform 5 m high, the angle of elevation of a tower was 30 deg. If the tower was 45 m high, how far away from the tower was the platform positioned?

Each exterior angle of a regular polygon measures 9 deg. How many sides does the polygon have?

If percentage of profit made,when an article is sold for Rs.78, is twice as when it is sold for Rs.69, the cost price of the article is

The marked price of a shirt is Rs 1800 and retailer gets a discount of 40%. If he sells that shirt for Rs 1800, then what is the profit percentage of retailer?