Question

Lord of all, in this problem, three pairs of numbers are connected through a mathematical operation to a common answer. What is the missing number? 4,5,6...., 10, 12,15

Answer 1

Answer: 8

Step-by-step explanation:

Hi, to answer this question we have to analyze the sequence given:

4, 5, 6...., 10, 12, 15

So, the rule of the sequence is that at the third time adding values  , we are adding a unit more:

• 4
• 4+1 =5
• 5+1 =6
• 6 +2 =8 (third time, we add 2 instead of 1)
• 8+2=10,
• 10+2 =12  
• 12+3 =15 (third time, we add 3)

The missing number is 8.

Feel free to ask for more if needed or if you did not understand something.