Answer and explanation:
First, he makes a winding path through the jungle, so to make Zaroff think that he went deeply into the woods ( Zaroff finds him right away). Next one - he makes what is called Malay mancatcher - he runs into a fallen tree which lies on a smaller non-cut tree, he makes a trigger, so whoever touches the trigger, it pulls him down and larger, a dead tree falls onto him (Zaroff just hurt his shoulder in this one). The third one is called the Burmese tiger pit. As Rainsford gets caught up in quicksand, he gets the idea of making this one. He digs a hole near quicksand and on the bottom of it, he puts sharp sticks and then covers it with branches and grass to hide it, so if Zaroff steps onto it, he will fall down and get stabbed (Zaroff`s hunting hound gets killed in this one). The fourth one was a trick that he learned in Uganda, in this one he uses his knife which he ties to a sprout, he points the knife to a path, and then with a grapevine he manages to connect the sprout with the trigger, so if Zaroff reaches the trigger, it will pull the knife and stab him and in this case that was the servant Ivan. The fifth one is the one mentioned in the question where Rainsford tricks Zaroff that he is dead by jumping to the sea. The final one is in Zaroff`s bedroom. He thinks that Rainsford is dead, but he is hidden in the curtains and when Zaroff comes to the bedroom, he surprises him and eventually kills him. So, there are four traps mentioned in the question that Rainsford uses to elude Zaroff, but it seems that only two served Rainsford to get away, and four were intended to hurt or kill Zaroff.
I hope this will help.
