1) The smallest number which when diminished by 7, is divisible by 12, 16, 18 and 21 ?. A) 1008 B) 1015 C) 1022 D) 1032 Answer: Option BExplanation:Let the smallest number be X,Lcm of 12,16,18,21,28 = 1008.Here in question,Diminished by 7, so, x-7 = 1008.x = 1008+7 = 1015.