The pet shop in Mochdewton sells only guinea pigs and hamste…

The pet shop in Mochdewton sells only guinea pigs and hamsters. Each guinea pig costs twice as much as a hamster. A local elementary school purchased 5 guinea pigs and 3 hamsters. If the transaction had been for 3 guinea pigs and 5 hamsters, the cost would have been $10 less. What is the price of a guinea pig?  [GuineaPig] What is the price of a hamster?   [Hamster]   Adapted from “The Lady or the Tiger? and other logic puzzles” by Raymond M. Smullyan

Determine which of these set identities are supported by the…

Determine which of these set identities are supported by the entries in the membership table given below.  There may be more than one or none. Select ‘True’ if the identity is supported by this given membership table; otherwise select ‘False’. [1]  (A – B) – C ⊈ (A – B) [2]  (A – C) – B ⊂ (A – C) [3]  (A – B) ⊄ (A – C) – B [4]  (A – C) ≠ (A – B) – C [5]  (A – C) ⊆ (A – B) [6]  (A – C) – B = (A – B) – C A B C A – C A – B (A – C) – B (A – B) – C 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 1 1 0 0 0 0 1 0 0 1 1 1 1 1 0 1 0 1 0 0 1 1 0 1 0 0 0 1 1 1 0 0 0 0