Check my answer please!
A tower of blocks has 1 block in the top row, 3 blocks in the next row, 5 blocks in the next row, and so on. there are six rows in all. how many blocks are in the tower?
11 blocks
47 blocks
36 blocks *MY ANSWER*
49 blocks
2 answers
11 blocks is my new answer
should have stayed with 36
1+3+5+7+9+11 = 36
In fact, if you add up the first n odd numbers, the sum is n^2.
How did you decide on 11? 1+3+5=9 and you still had three rows to go.
1+3+5+7+9+11 = 36
In fact, if you add up the first n odd numbers, the sum is n^2.
How did you decide on 11? 1+3+5=9 and you still had three rows to go.
3 answers