Question

Determine the Missing Number
12 24 36 7 8 15 4 ? 6 Then find the Missing number?

Answer 1

11 or 19 is the missing number

Answer 2

You have been given the following series:

12 24 36 7 8 15 4 ? 6

Lets try and rewrite it ---> 12 24 36    |    7 8 15    |    4 ? 6
What we have done is, simply broken the series into groups of 3.

Now we clearly see that in the 1st 2 groups, adding the first and second elements gives us the 3rd element (12 +24 = 36 and 7 + 8 = 15)

Hence, for the last grouping, we need to add 2 to 4 in order to get 6.

Therefore, the missing number and our answer is 2.