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Grade: Upto college level

                        

Multiplication of 11 with any number. (You cant use this rule for other numbers) Let me explain this rule by taking examples 1) 234163*11 = 2---2+3---3+4---4+1---1+6---6+3---3 = 2575793 Means insert the sum of 2 successive digits and put 2 terminal digits in its place 2) 45345181*11 = 4---4+5---5+3---3+4---4+5---5+1---1+8---8+1---1 = 498796991

6 years ago

Answers : (1)

Sourabh Singh
IIT Patna
askIITians Faculty
2104 Points
							Hii
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4 years ago
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