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# TOPIC: QuestionPMP Exam calc of ES, EF, LS, LF, Float.

## PMP Exam calc of ES, EF, LS, LF, Float. 6 years 7 months ago #2232

 Tarek Al-Fahham Topic Author Offline Senior Boarder Posts: 71 Karma: 3 Thank you received: 0 Based on PM PrepCast and Formula Study Guide, here are the fomulas: EF = ES + Dur - 1 ES = EF of prev (largest) + 1 LF = LS of succ (smallest) - 1 LS = LF - Dur + 1 Float = LS - ES = LF - EF However, it was mentioned that there are other calculation methods, which where the Start Day is Zero. I have searched and found this: www.projectlearning.net/pdf/X2_1.pdf As we can see from the PDF, the formulas are similar, but they start at Day Zero, and there is no +1 nor -1. What is expected on PMP Exam ? Does it make any difference ? Tarek. Your e-mail address will never be displayed on the site. Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.

## Re:PMP Exam calc of ES, EF, LS, LF, Float. 6 years 7 months ago #2233

 Adam Leslie Offline Junior Boarder Posts: 25 Thank you received: 0 Both methods give the same result. No difference between the two, and the exam does not care. Your e-mail address will never be displayed on the site. Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable. Regards, Adam

## Re:PMP Exam calc of ES, EF, LS, LF, Float. 6 years 7 months ago #2234

 Tarek Al-Fahham Topic Author Offline Senior Boarder Posts: 71 Karma: 3 Thank you received: 0 There will be difference if in exam required to calculate say, LF of a given activity on the Network Diagram. But, there will be no differece to calculate Total Float and Find the Cretical Path. Tarek. Your e-mail address will never be displayed on the site. Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.
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