Respuesta :
Answer:
3
Step-by-step explanation:
Obviously the answer is 3 because for 12 to get to 15 you have to subtract 15 - 12 giving you 3
The table is an illustration of a two-way table, the missing number in the table is 3
How to determine the missing number?
The entries on the table are given as:
12 ? 15
11 10 21
23 13 36
In the second column, we have the following entries:
?, 10 and 13
Express as sum
? + 10 = 13
Subtract 10 from both sides
? = 3
Hence, the missing number in the table is 3
Read more about two-way tables at:
https://brainly.com/question/16148316
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