Some numbers are missing from the number series below. Which option gives the missing numbers, from left to right?
4 _ 8 4 1 _ _ 1 8 4 _ 8
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 1, 8, 4, 1
In a number series with blanks, the numbers that are given show a group that repeats. Here the group is 4, 1, 8 (3 numbers), written four times:
Copy 1: 4 1 8, so the blank here is 1
Copy 2: 4 1 8, so the blank here is 8
Copy 3: 4 1 8, so the blank here is 4
Copy 4: 4 1 8, so the blank here is 1
The blanks, in order, are therefore 1, 8, 4, 1.