Environmental Sciences, asked by dileepchaturvedi, 1 month ago

1 point
01. Which one is the hardest
pencil grade / इनमें से कौन सा
कठोरतम पेन्सिल ग्रेड हैं:
OB
O HB
OF
OH​

Answers

Answered by Anonymous
0

Answer:

HB IS YOUR ANSWER

Explanation:

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