A plane starts at 11:00 (Indian time) and lands at 16:30 (America time) in America. If time difference between India and America is +5:30, then total teime of journey will be
The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?
frank
"The study of mathematics, like the Nile, begins in minuteness but ends in magnificence"