The daily earnings of a taxi driver during a week are: Rs. 60, Rs. 65, Rs. 70, Rs. 52.50, Rs. 63, Rs. 73 and Rs. 68. What is his average daily earning for the week ?
In an examination, 1100 boys and 900 girls appeared. 50% of the boys and 40% of the girls passed the examination. The percentage of candidates failed is:
Certain gases in the atmosphere water vapor,carbon dioxide,methane and nitrous oxide help maintain the earth's temperatures and climate.these are called:
