AM is 50 and GM is 40 AM is 45 and GM is 27

Rules and regulations About zoom link and class Students must enter to meeting before the class starts. Meeting will be locked immediately after the class starts. All the camera must be on. Otherwise teacher may remove student from the class without prior notice. All resources related to optional mathematics will be posted in math.maheshkhanal.com.np everyday. You can find your zoom link in the same web address. meeting Link will not be posted in group everyday. You should and must be able to find it yourself. Under unavoidable circumstances, you will be informed from school administration side about the delay or cancellation of the class.  Evaluation system Unlike last year, your evaluation will be on CAS basis. Sixty Percent of your marks will be calculated from your regular activities.   CAS evaluation will be done on following basis  Regularity = 20% ( joining the meeting will not be enough. Your camera must be turned on)   weekly oral test = 15% ( students will be asked to answer

 If k +10, is GM of k + 2 and 9 ( k + 2) find value of k  If 5 is arithmetic mean between b and 8, find the geometric mean between them.  The geometric mean of X and 27 is 9, what is their arithmetic mean