1111 × 1111 = _____

Addition : (1.111)_(2) + (11.11)_(2) + (111.1)_(2) + (1111)_(2)

If (111.1)^x=(11.11)^y=(1.111)^z then prove that (1)/(x)-(2)/(y)+(1)/(z)=0 .

Look at the following pattern: 1^(2) = 1 11^(2) =121 111^2 = 12321 1111^(2)=1234321 11111^2 = 123454321 Make a conjecture about about each of the following : 111111^2=.............. 1111111^2=........... Check if your conjecture is true .

The x=1111....1 of 91 times of is a (a) Even number. (b) Prime number. (c) Not a prime. (d) none of these

Convert the binary (1111)_2 into decimal.