CT 6: Unit Digit

1.The units digit of the square of the number 1384 is:

2. Find the unit digit of 73 × 117 × 38 × 97 × 52.

3. What would be the digit in the unit place of the product of 61 × 62 × 63……..68 × 69? 

4. Find the last digit of 23⁷²⁹ × 78⁹⁰⁰

5. What is the unit digit in the expansion of 67³²?

6. Find the unit digit of (1331)^1/3 × (361)^1/2.

7. Find the unit digit of (675 × 375 × 32 × 817 × 326)

8. Find the unit digit of (239 × 271)² + (125 × 192)².

9. Find the unit digit of 103 × 107 × 93 × 119 × 71.

10. The last digit of the number (986)⁹⁸⁶ is: