PEA305

1. If the unit’s digit in the product of (47a × 729 × 345 × 343) is 5, then how many values can 'a' take?

a) 9 b) 3 c) 7 d) 5

2. The rightmost non-zero digit of the number 302720 is?

a) 1 b) 3 c) 7 d) 9

3. What is the unit digit in 29?

a) 1 b) 3 c) 2 d) 4

4. What is the unit's digit of the number (6256 – 4256)?

a) 0 b) 1 c) 4 d) 7

5. Find the unit digit in the product (243 × 397 × 2497 × 3913)?

a) 4 b) 3 c) 7 d) 1

6. What are the respective digits in the unit’s place in the expansions of 7⁷ and 17⁷?

a) 2, 6 b) 3, 3 c) 1, 4 d) 9, 9

7. Find the unit's digit in (264¹⁰² + 264¹⁰³)?

a) 0 b) 2 c) 4 d) 6

8. Which digits should come in place of @ and # if the number 62684@# is divisible by both 8 and 5?

a) 4, 0 b) 0, 4 c) 4, 4 d) 1, 1

9. What will be the last digit of the multiplication 3153 × 7162?

a) 5 b) 9 c) 7 d) 6

10. The digit in the unit place of the number 7²⁹⁵ × 3¹⁵⁸ is?

a) 7 b) 2 c) 6 d) 4

11. Find the unit digit of (23)^25!?

a) 0 b) 2 c) 3 d) 1

12. The unit digit of (137¹³)⁴⁷ is?

a) 1 b) 3 c) 5 d) 7

13. The unit digit of 3587 + 9346 is?

a) 2 b) 4 c) 6 d) 8

14. The unit digit of 4491 × 7337 is?

a) 2 b) 4 c) 6 d) 8

15. The unit digit of 1234 - 59 is?

a) -1 b) 1 c) 9 d) None of these

16. Find the unit digit of the given product (234 × 14832 × 1721)?

a) 6 b) 8 c) 2 d) 7

Unit Digit MCQs