Test: Odd One Out- 1 - Class 9 MCQ

Odd One Out -

In order to find the odd one out, we need to observe the given numbers and identify any patterns or characteristics that differentiate one number from the others. Let's analyze each number:

• 8: Cube of 2.


• 27: Cube of 3.


• 64: Cube of 4.


• 100: Not a perfect cube.


• 125: Cube of 5.


• 216: Cube of 6.


• 343: Cube of 7.

From the analysis above, we can see that all the given numbers except 100 can be expressed as the cube of an integer. Hence, the odd one out is 100.

Therefore, the correct answer is B: 100.

Explanation:
To find the odd one out, we need to identify the pattern or rule followed by the given numbers.
Let's analyze the given numbers:
- 396: This number is divisible by 3 and 9. The sum of its digits is 18.
- 462: This number is divisible by 2, 3, and 11. The sum of its digits is 12.
- 572: This number is divisible by 2, 11, and 13. The sum of its digits is 14.
- 427: This number is divisible by 7. The sum of its digits is 13.
- 671: This number is divisible by 61. The sum of its digits is 14.
- 264: This number is divisible by 2, 3, and 11. The sum of its digits is 12.
Analyzing the patterns:
- The numbers 462 and 264 have the same pattern, being divisible by 2, 3, and 11.
- The numbers 572 and 671 have the same pattern, having a sum of digits equal to 14.
- The numbers 396 and 427 do not share any common pattern with the other numbers.
Conclusion:
Based on the analysis, the odd one out is 427 because it does not follow any of the patterns observed in the other numbers.

Find the odd one out:

1, 4, 9, 16, 23, 25, 36

To find the odd one out in the given sequence, we need to observe the pattern or rule that governs the sequence. Let's analyze the numbers:

• 1: 1^2 = 1


• 4: 2^2 = 4


• 9: 3^2 = 9


• 16: 4^2 = 16


• 23: This number does not follow the pattern of squaring the previous number.


• 25: 5^2 = 25


• 36: 6^2 = 36

From the analysis, we can see that the number 23 does not follow the pattern of squaring the previous number. Therefore, the odd one out in the sequence is 23 (option B).

Explanation:
The odd one out is B: ABA.


Here's the detailed solution:
A: OTP
- OTP stands for One-Time Password, which is a unique code used for authentication purposes.
- OTP is a commonly used term in technology and security.
B: ABA
- ABA does not have a commonly known meaning or usage.
- It does not fit into the pattern of the other options.
C: SZX
- SZX does not have a commonly known meaning or usage.
- It does not fit into the pattern of the other options.
D: UVB
- UVB does not have a commonly known meaning or usage.
- It does not fit into the pattern of the other options.
Therefore, the odd one out is B: ABA as it does not have a commonly known meaning or usage like the other options.

To identify the word that is different from the rest, we need to analyze the characteristics or attributes of each word and compare them.
Here is a detailed solution:
Word Analysis:
1. Turtle: A reptile with a hard shell that lives in water and on land.
2. Lamb: A young sheep.
3. Colt: A young male horse.
4. Bitch: A female dog.
Different Word:
The word that is different from the rest is "Bitch" because it is the only word that refers to a female dog, whereas the other words refer to young animals or specific species.
To summarize:
- Turtle, Lamb, and Colt are all words that refer to young animals or specific species.
- Bitch is the only word that refers to a female dog.
Therefore, the answer is D: Bitch.

Analysis:
To determine the word that is different from the rest, we need to identify the unique characteristic or category that separates it from the others. Let's analyze each word individually:
A: Valley
- A valley is a low area of land between hills or mountains.
- Valleys are natural formations.
B: River
- A river is a large natural flow of water that moves across the land.
- Rivers are natural formations.
C: Mountain
- A mountain is a large natural elevation of the Earth's surface, rising abruptly from the surrounding level.
- Mountains are natural formations.
D: Tower
- A tower is a tall structure or building, typically higher than it is wide.
- Towers are human-made structures.
E: Sea
- A sea is a large body of saltwater that is partially enclosed by land.
- Seas are natural formations.
Conclusion:
Based on the analysis, the word that is different from the rest is "Tower" because it is the only word that represents a human-made structure, while the others represent natural formations.