Each level of a smartphone app adds more gems for you to match. On level one, there were 13 gems. On level twelve, there were 123 gems. When you complete all twelve levels, how many total gems will you have matched?

Question

anonymous · Answer

I can't help you because I don't have an Iphone because i'm broke :/

anonymous · Answer

Looks like 10 gems are added each level
Level 1    2    3   4   5   6      7   8   9     10   11      12      
       13  23  33 43  53  63  73  83  93  103  113  123

Add up all the numbers in that 2nd row for your answer

anonymous · Answer

can you help me with this one as well

anonymous · Answer

The first and last terms of a 10-term arithmetic series are listed in the table. What is the sum of the series?


Term Number	Term
1	                    3
10	                   75
@bangkokgarrett