Always • Both • Bounded • Contain • Contains • Direction • Directions • Does • Either • Elements • Even • Example • Extend • Extends • Finite • Have • Infinite • Infinitely • Integers • Its • Limit • Maximum • Meaning • Minimum • More • Multiple • Natural • Negative • Number • Numbers • One • Point • Points • Positive • Real • Restrictions • Set • Since • Unbounded • Value • Values • Yes