(c) Since, in the numerator of the product of the expression, there will be 2 zeroes at the end and these two zeroes will be cancelled by 2 zeroes of the denominator. Hence finally, we get a non-zero unit digit in the expression. Now, 1×2×3×4 ×
5×6×7×8×9×10
100
=
1×28×34×52×71
52×22
= 1×26×34×7 Therefore, the unit digit of the given expression will be same as that of = 1×26×34×7 Multiplication is 1×26×34×7 is ‘36288’. Now, the unit digit is '8‘