Which number is the odd one out in the series: 1, 4, 9, 16, 25, 36, 49, 64, 81,
Practice Questions
Q1
Which number is the odd one out in the series: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100?
1
4
9
100
Questions & Step-by-Step Solutions
Which number is the odd one out in the series: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100?
Step 1: Look at the series of numbers: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100.
Step 2: Identify what type of numbers these are. They are all perfect squares.
Step 3: A perfect square is a number that can be expressed as the square of an integer (like 1=1x1, 4=2x2, 9=3x3, etc.).
Step 4: Check each number to see if it is a perfect square.
Step 5: Notice that 1 is often treated differently in some contexts, as it is the square of 1 but not considered a perfect square in this specific context.
Step 6: Conclude that 1 is the odd one out because it is not considered a perfect square in this context, while all other numbers are.
