railway RRB JE (CBT I + CBT II) Mock Test 2024 Industrial Engineering Operations Research PERT and CPM
The expected time (te) of a PERT activity in terms of optimistic times (t0), pessimistic time (tp) and most likely time (tm) is given by:
1
\({t_e} = \frac{{{t_o} + 4{t_m} + {t_p}}}{6}\)
2
\({t_e} = \frac{{{t_o} + 4{t_p} + {t_m}}}{6}\)
3
\({t_e} = \frac{{{t_p} + 4{t_o} + {t_m}}}{6}\)
4
\({t_e} = \frac{{{t_o} + 4{t_p} + {t_m}}}{3}\)