19. | Find the remainder when 231 is divided by 5.
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Answer – (C)
Solution:
210=1024
Unit digit of 210*210*210 is 4 [as 4*4*4 gives unit digit 4].=> Unit digit of 231 is 8. Now, 8 when divided by 5, gives 3 as remainder.Hence, 231 when divided by 5, gives 3 as remainder.
Title : Numbers Q19
Description : 19. Find the remainder when 231 is divided by 5. A. 4 B. 5 C. 3 D. 7 Answer – (C) Solution: 210=1024 Unit digit of 210*210*210 is 4 [as 4*4...
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