How many three digits no. can be formed also including the condition that the no. can have at least two same digits ?  Choose the correct choice from the following options
A) 223  B) 252  C) 077  D) 160  E) 111
Explanation:   Total number of 3 digit numbers = 9×10×10 = 900   Total number of numbers in which no digit repeats = 9×9×8 = 648   So the total number of numbers in which at least one digit repeats = 900 - 648= 
<gadget id="calculator">900 - 648</gadget>
<output>252</output>
252   Answer:252
<result>B</result>
How many three digits no. can be formed also including the condition that the no. can have at least two same digits ?