Find the odd one 6, 9, 15, 21, 24, 28, 30
39 persons can repair a road in 12 days, working 5 hours a day. In how many days, will 30 persons working 6 hours a day, complete the work ?
The average of 20 numbers is zero; of them, at most how many may be greater than zero?
A 6% stock yields 8 % . The Market value of the stock is:
A person crosses a 600 metre long street in 5 minutes what is his speed in kilometres per hour?
From the series given 53, 53, 40, 40, 27, 27,......... find number which should come next.