How to find Unit`s Place digit?

How to find Unit’s Place digit?
3rd sem ‘B’ Div
2016-17
Prof. Mouna M. Naravani
1. What is the unit digit in the product:
Ans
373 * 298 * 324 * 326
6
2. What is the unit digit in the product:
684 * 759 * 413 * 676
8
3. The unit digit in the product 784 * 618 * 917 * 463 is: 2
Cyclicity
Numbers
Cyclicity
0, 1, 5, 6
1
4, 9
2
2, 3, 7, 8
4
Find the unit place digit of:
1. 282
5. 3983
2. 283
6. 7542
3. 284
7. 7105
4. 285
8. (4173)754
What is the unit digit in the product:
9. 6223 * (253)121 * (747)782
10.. 365 * 659 * 771
11. (3547)153 * (251)72
12. (264)102 + (264)103
13. Find the remainder when 231 is divided by 5?
14. (983)85 - (235)37
15. What is the unit digit in {(6374)1793 x (625)317 x (341491)}?