Answer:
1. 1/4 4 1 4 4 16 64 1024
2. 118
Step-by-step explanation:
1. 16 is obtained as 1024/64 = 16
before 16 goes: 64/16 = 4
before 4 goes: 16/4 = 4
before the second 4 goes: 4/4 = 1
before 1 goes: 4/1 = 4
before the third 4 goes: 1/4
2. From row 1 to row k, there are k² numbers (notice that rows finished in 1, 4, 9, etc., all perfect squares). 12² = 144, so 140 is on 12th row.
A number in row k is 2k less than the number directly below it. For example, 3 is on 2nd row, then is 2*2 = 4 units less than the number directly below it, which is 7.
The number above 140 is on the 11th row, then above 140 is 140 - 2*11 = 118.
