Which number is the odd one out?
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Which number is the odd one out?
To solve this problem, we'll follow these steps:
Step 1: Identify if each given number is odd or even.
Step 2: Compare and determine the number with the different characteristic.
Step 3: Conclude the analysis with the number that is distinct.
Now, let's work through each step:
Step 1: Check if each number is odd or even by checking divisibility by 2.
- 23: Dividing by 2 gives a remainder, hence it is odd.
- 27: Dividing by 2 gives a remainder, so it is also odd.
- 21: Dividing by 2 results in a remainder, thus it is odd.
- 32: Dividing by 2 gives no remainder, therefore it is even.
Step 2: Compare the results:
Three numbers (23, 27, 21) are odd, while one number (32) is even.
Therefore, the solution to the problem is .
What number do the blue squares below represent?
Look at the last digit! If it ends in 0, 2, 4, 6, or 8, it's even. If it ends in 1, 3, 5, 7, or 9, it's odd. Much faster than dividing!
Then you need to look for a different pattern! Try checking if they're prime numbers, multiples of 3, or have another mathematical property that makes one stand out.
Because we're looking for the minority group. Since there are 3 odd numbers (23, 27, 21) and only 1 even number (32), the even number is the outlier.
Usually no! In math, there's typically one clear pattern that makes sense. However, always read the question carefully to understand what type of difference you're looking for.
Start with odd/even since it's the most common!
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