23
23
Oh, dude, that's just the mean of those numbers. You add them all up and divide by how many there are. So, like, you add 11 + 9 + 19 + 19, which gives you 58, then divide by 4 to get 14.5. That's the mean, man. Easy peasy.
28
-1
5 and -4
4 & 19... 4 x 19 = 76. 4 + 19 - 23.
23
79
79
41
19
19
There are numerous options. 20+1 19+2 18+3 17+4 16+5 etc
47
The two numbers that multiply together to equal 48 and add together to equal 19 are 12 and 4. When multiplied, 12 × 4 equals 48, and when added, 12 + 4 equals 16. Since these numbers do not satisfy both conditions, the correct pair is actually 16 and 3. They multiply to 48 and add up to 19.
In addition, several pairs of numbers can equal 19. For example, 10 + 9 = 19, and 15 + 4 = 19. Additionally, 18 + 1 and 12 + 7 also sum to 19. Any two numbers that add up to 19 can be considered valid combinations.
19+4