Some numbers are missing from the number series below. Which option gives the missing numbers, from left to right?
5 _ 7 _ 2 7 5 _ 7 5 _ 7
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 2, 5, 2, 2
In a number series with blanks, the numbers that are given show a group that repeats. Here the group is 5, 2, 7 (3 numbers), written four times:
Copy 1: 5 2 7, so the blank here is 2
Copy 2: 5 2 7, so the blank here is 5
Copy 3: 5 2 7, so the blank here is 2
Copy 4: 5 2 7, so the blank here is 2
The blanks, in order, are therefore 2, 5, 2, 2.