Step-by-step explanation:
a. 246,913,578
2+22+222+2,222+22,222+222,222+2,222,222+22,222,222+222,222,222
b. 0.3+0.33+0.333+0.3333+0.33333+0.333333+0.3333333+0.33333333+0.333333333 =2.962962963
Answer:
5th
Not sure what number sense is, but 3 is the answer.
