Question

3 power 57 multiply 6 power 41 multiply 7 power 63 unit word

Answer 1

cyclicity of 3 is 4
so,
unit digit of 3^57 is also unit digit of
3^1. Hence, unit digit of this expression is 3
similarly, unit digit of 6^41 is 6
and unit digit of 7^63 is 3
now,
unit digit of 3^57 ×6^41 × 7^63
is 3×6×3 =54 unit digit is 4