The smallest five digit number which is divisible by 12,18

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The smallest five digit number which is divisible by 12,18 and 21 is :

1. 10224
2. 30256
3. 10080
4. 50321

Correct Option: C

Firstly , we find the LCM of 12, 18 and 21

∴ LCM of 12, 18 and 21 = 2 × 3 × 2 × 3 × 7 = 252
Of the options, 10080 ÷ 252 = 40
Hence , required answer is 10080 .