What is the third term in the sequence $4$4, $-5$−5, $6$6, $-7$−7, $8$8?
Find the next number in the sequence:
Is the sequence $1,2,3,4,5,6$1,2,3,4,5,6 finite or infinite?
Is the sequence $-1,-2,-3,-4,-5,-6$−1,−2,−3,−4,−5,−6$\text{, . . .}$, . . . finite or infinite?