29 - 28 = 1 141 + 1 = 142
The pair of consecutive integers which add up to 55 are 27 and 28. Therefore, any consecutive pair of numbers below 27 and 28 add up to a total less than 55.
The integers are 13 and 15.
28
There are nine(9) numbers: 19, 28, 37, 46, 55, 64, 73, 82, 91
22
b - 15 = 28
The sum of the prime numbers that are greater than 3 and less than 28 is: 95
15.
6
20
-15
29 - 28 = 1 141 + 1 = 142
The pair of consecutive integers which add up to 55 are 27 and 28. Therefore, any consecutive pair of numbers below 27 and 28 add up to a total less than 55.
Just do the additions. Or, if you want a shortcut, use the formula for an arithmetic series.
N = -12 + 8*(17+28) = -12 + 8*45 = -12+360 = 348
-13 and -15