1
4
7
?
?
Total?
A tower of blocks has 1 block in the top row, 4 blocks in the next row, 7 blocks in the next row, an so on. There are 5 rows in all. How many blocks are in the tower?
I need help finding the answer.
3 answers
10
13
total 35?
13
total 35?
Right.
2 answers