Quantitative Aptitude - Arithmetic Ability Questions

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

In ∆DEF measure of angle E is 90°. If secD = 25/7, and DE = 1.4cm, then what is the length (in cm) of side DF?

20% of a = b, then b% of 20 is the same as _________ of a.

The price of an article is discounted by 25%, to restore to its original value, the new price must be increased by

The mean of 10 observations is 13. Two more observations are included and the new mean becomes 14. The mean of two new observations is

The selling price of an item inclusive of a 10% profit was Rs.440. What would be the percentage loss if the item was sold for Rs. 370?

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?

What should be the average speed of the car to cover a distance of 342 km in 1.9 hours?