How to multiply 11 by 11 without calculator?
Whenever someone says to calculate 11 X 11 = ?, then what we think at first place? Either we take a calculator and says oh! 11 X 11 = 121 , its very easy....and if you don't have calculator with you, then you will multiply like 11 X 10 = 110 + 11 = 121 or the traditional way of multiplication using paper. 11 X 11 -------------------- 11 11 x ---------------------- 121 So, its also OK,