Remember that an-bn is always divisible by a+b when n is even. Hence 11116 -1 means111 16-1 16will be divisible by (111+1) or 112. Hence, by options, we can say that (111 16-1) is divisible by 56.
Bronze is an alloy of-
The pH of a neutral solution is —
The fuel that is used in modern submarines is -
The noble gas used in radiotherapy is
The element used in the manufacture of safety matches is —
Manganite is an ore/mineral of
Petroleum is a mixture of-
The nucleus of an atom consists of-
The gas used for filling weather balloons is-
The chemical name of'Common salt’
