2 votes 2 votes find number of 7 digit number with sum of digits equal to 11 and formed using digits 1 ,2 ,3 Pooja Palod asked Jan 13, 2016 Pooja Palod 1.5k views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
Best answer 7 votes 7 votes Sum is 11 = (3,3,1,1,1,1,1) , (3,2,2,1,1,1,1) , (2,2,2,2,1,1,1) No of combinations : 7!/2!5! + 7!/2!4! + 7!/3!4! Somnath Paul answered Jan 13, 2016 selected Jan 1, 2017 by Aboveallplayer Somnath Paul comment Share Follow See all 0 reply Please log in or register to add a comment.