`x+7=18` Is true or false? Justify

Whether a quadrilateral has ten elements.Is it true or false? Justify.

Are the following statement true or false ? Justify the answer : Every integer is a whole number.

State whether the following statements are true or false. Justify your answer 7cancelin set of prime numbers

State the following statement is true or false. Justify your answer. { 2, 6, 10 } and { 3, 7, 11} are disjoint sets.

State whether the following statements are true or false. Justify your answer. S={5,6,7} implies 8 in S.

State whether the statement 'every rectangle is a parallelogram, is true or false. Justify.

State whether each of the following statement is true or false. Justify your answer. { 2, 6, 10, 14 } and { 3, 7, 11, 15} are disjoint sets.

State whether each of the following statement is true or false. Justify your answer. { 2, 6, 10, 14 } and { 3, 7, 11, 15} are disjoint sets.

State whether each of the following statement is true or false. Justify your answer. { 2, 6, 10, 14 } and { 3, 7, 11, 15} are disjoint sets.