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Solve this faster with the right shortcut first
Shortcut used: Use divisibility, cancellation, and BODMAS before long calculation.
Solve in 3 steps:
- Check operation order.
- Cancel common factors.
- Use divisibility/remainder rules where applicable.
Common mistake: Do not break left-to-right order for equal-priority operations.
Question 5
Multiple Choice Question
Question
Find the HCF of 144 and 216.
Explanation
Correct Answer: C
ANSWER
Correct Answer: C
Method / Topic: Number System
The HCF is 72.
Why this answer is correct
The answer follows the correct operation order or number rule.
Short Explanation
The HCF is 72.
Detailed Explanation
Question
Find the HCF of 144 and 216.
ANSWER
Correct Answer: C
Method / Topic: Number System
144=2⁴×3² and 216=2³×3³. Common lowest powers give 2³×3²=72.
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Question 5
Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Learn + solve
Shortcut used, common trap, and the fastest solving route
Shortcut used: Use divisibility, cancellation, and BODMAS before long calculation.
Solve in 3 steps:
- Check operation order.
- Cancel common factors.
- Use divisibility/remainder rules where applicable.
Common mistake: Do not break left-to-right order for equal-priority operations.
Question
Find the HCF of 144 and 216.
Explanation
Correct Answer: C
ANSWER
Correct Answer: C
Method / Topic: Number System
The HCF is 72.
Why this answer is correct
The answer follows the correct operation order or number rule.
Short Explanation
The HCF is 72.
Detailed Explanation
Question
Find the HCF of 144 and 216.
ANSWER
Correct Answer: C
Method / Topic: Number System
144=2⁴×3² and 216=2³×3³. Common lowest powers give 2³×3²=72.
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