Let $$\begin{array} { l } U = \{ 1,2,3,4,5,6,7,8,9,10 \} \\A = \{ 2,4,6,8 \} \\B = \{ 5,7 \} \\C = \{ 2,5,6,7,10 \}\end{array}$$

question 7

Multiple Choice

Let $$\begin{array} { l } U = \{ 1,2,3,4,5,6,7,8,9,10 \} \\A = \{ 2,4,6,8 \} \\B = \{ 5,7 \} \\C = \{ 2,5,6,7,10 \}\end{array}$$ List all the members of the set. $A \cap ( B \cap \bar { C } )$

• A) \(\{ 1,5 \}\)
• B) \(\{ 2,6 \}\)
• C) \(( 5,7 )\)
• D) \(\{ 2,4,6,8 \}\)
• E) \(\varnothing\)

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Definitions:

Smiling

A facial expression formed by flexing the muscles at the sides of the mouth, often signifying joy, amusement, or sociability.

Blind Group

A control group in an experiment that is not exposed to the treatment or intervention being tested, ensuring that the effect of the variable being studied can be accurately measured.

Social Smile

An infant's spontaneous smile, often occurring from birth and becoming socially responsive between 6 to 8 weeks of age.

Greeting

A polite word or sign of welcome or recognition exchanged between people when meeting or communicating.