Question

If 9power 42 is expanded then it's unit place digit is​

Answer 1

${9}^{42} = .............1$

Unit place for this will be "1".

In general.

${9}^{even \: no.} = once(unit) \: digit \: will \: be \: (1).$

${9}^{odd \: no.} = once(unit) \: digit \: will \: be \: (9).$

HOPE THAT HELPS!!