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Reading Mode
Right = 0
Wrong = 0
S = {x ∈ R : x>4}
S = {x ∈ R : x<4}
S = {x ∈ R :x ≤ 4}
S={x ∈ R:x4)
{x: x ∈ R, x≤-31
{x: x ∈ N, x≤-3}
{x ∈ R, x ≤3}
{x: x ∈ N, x ≤3}
S={y∈ R : y>4}
S={y∈ R: y=4}
S={y∈ R:y<4}
S={y∈ R: y≥4 }
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