The word 'sum' means you need to add. If you add 1.22 and 2.3 you get 3.52.
170. 82 + 19 = 101 101 + 21 = 122 122 + 23 = 145 145 + 25 = 170. Difference increases by 2 each time.
145.
0.6897
The idea is to first add 122 + 230 (that's what "the sum of" means). Then, add 5 to the result.
45 + 46 + 47 + 48 + 122 = 308
170. 82 + 19 = 101 101 + 21 = 122 122 + 23 = 145 145 + 25 = 170. Difference increases by 2 each time.
The sum of 237 and 122 is 359.
145.
1 + 5 + 29 + 145 = 145
9 (81 + 64 = 145)
The sum of 15 and 107 is 122.
The sum of 67 and 78 is 145.
122
122
0.6897
The idea is to first add 122 + 230 (that's what "the sum of" means). Then, add 5 to the result.
2*(812+122) = 18682*(812+122) = 1868