State true / false:If a set has only one subset then it is a null set

State true / false: NcancelsubZ

State true / false: AsubeB , BsubeCimpliesAsubeC

State true / false:If A = {3, {4, 5}, 2} then {4, 5} in A

State true or false Cube of any odd number is even.

State true or false There is no perfect cube which ends with 8.

State true or false: R={(a,b) : a,b in A, a-b=2} is neither an empty relation nor a universal relation in the set A={0,1,2,3,4,5}

State true or false: The sum of two prime numbers is always a prime number.

State true or false A perfect cube does not end with two zeros.

State true or false: R={(a,b) : a+b=5} is an empty relation in the set of whole numbers.

State true or false: R={(a,b) : a,b in A, |a-b| <5} is an universal relation in the set A={x : x in R, -50