Correct option is B
To find the missing number, we need to observe the pattern in the differences between consecutive numbers:
· 12 - 6 = 6
· 21 - 12 = 9
· 33 - 21 = 12
The differences are increasing by 3 each time (6, 9, 12). Following this pattern, the next difference should be 15:
· 33 + 15 =
48
Thus, the missing number is 48.