Aman started running from his school, he first ran for 11 km towards south, then he turned towards west and ran √23 km in that direction. How far (in km)and in which direction is Aman now from his school?
The average of 17 results is 60. If the average of first 9 results is 57 and that of the last 9 results is 65, then what will be the value of 9th result?