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Answer : 1 2893 Explanation : Answer: A) 2893 Explanation: For solving this problem first we would break the whole range in 5 sections1) From 1 to 9Total number of zero in this range = 02) From 10 to 99Total possibilities = 91 = 9 ( here 9 is used for the possibilities of a non zero integer)3) From 100 to 999 - three type of numbers are there in this range a) x00 b) x0x c) xx0 (here x represents a non zero number)Total possibilities for x00 = 911 = 9, hence total zeros = 92 = 18for x0x = 919 = 81, hence total zeros = 81similarly for xx0 = 81 total zeros in three digit numbers = 18 81 81 = 1804) From 1000 to 9999 - seven type of numbers are there in this rangea)x000 b)xx00 c)x0x0 d)x00x e)xxx0 f)xx0x g)x0xxTotal possibilities for x000 = 9111 = 9, hence total zeros = 93 = 27 for xx00 = 9911 = 81, hence total zeros = 812 = 162 for x0x0 = 9191 = 81, hence total zeros = 812 = 162for x00x = 9119 = 81, hence total zeros = 812 = 162 for xxx0 = 9991 = 729, hence total zeros = 7291 = 729for xx0x = 9919 = 729, hence total zeros = 7291 = 729for x0xx = 9199 = 729, hence total zeros = 7291 = 729total zeros in four digit numbers = 27 3162 3729 = 2700thus total zeros will be 0 9 180 2700 4 (last 4 is for 4 zeros of 10000)= 2893

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