4 persons a, b , c , d have to go to concert which will held
in 17 minutes. there is a bridge which only 2 persons at a
time can cross. its night and they have only one flashlight
with them. Flashlight cannot be thrown. one person should
return with the flashlight
all 4 person have different speed.
a = crosses bridge in 1 min.
b = crosses bridge in 2 min.
c = crosses bridge in 5 min.
d = crosses bridge in 10 min
how can they all reach in time.??
Ex- suppose a and d crosses bridge which will take 10 mins
and then d returns back with a flashlight which will make 20
mins and mission is failed.
a family has 4 people. father is 10kgs.mother 10
kgs.daughter 5 kgs,son 5 kgs........the family has to cross
a river to reach other side of land ..Assume they should go
from A to B....the boat is limited to carry 10 kgs at a
time...how will they reach?THERE IS NO SAILOR TO TAKE