How many 3-digit numbers, in all, are divisible by 6 ?

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First 3–digit number divisible by 6 = 102
Last such 3-digit number =996
∴ 996 = 102 + (n –1) 6
⇒ (n – 1)6 = 996 – 102 = 894

⇒ n – 1 =	894	= 149
	6

⇒ n = 150
Hence , required answer is 150.