Q. 15.0( 1 Vote )

If A = {5, {5, 6}, 7}, which of the following is correct?
A. {5, 6} A

B. {5} A

C. {7} A

D. {6} A

Answer :

In the given set we have been given that 2 elements and 1 set


Elements are 5, 7 and {5,6} is the set


So, {5,6} A.


All the other options are not correct


Because {5} is a set not an element, so it does not belongs to A , but 5 A


In the same way {6}, {7} are sets not elements.

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