True or False
All square numbers end with 0,1,4,5,6,9 at units place.( )
Answers
Solution :-
As we can see that,
→ 1² = 1 = unit digit 1 .
→ 2² = 4 = unit digit 4.
→ 3² = 9 = unit digit 9.
→ 4² = 16 = unit digit 6.
→ 5² = 25 = unit digit 5.
→ 6² = 36 = unit digit 6 .
→ 7² = 49 = unit digit 9.
→ 8² = 64 = unit digit 4.
→ 9² = 81 = unit digit 1.
→ 10² = 100 = unit digit 0.
So, all square numbers end with 0,1,4,5,6,9 at units place. .
Conclusion :-
→ unit digit 1 in last = 1 or 9.
→ unit digit 4 in last = 2 or 8.
→ unit digit 6 in last = 4 or 6.
→ unit digit 9 in last = 3 or 7.
→ unit digit 5 in last = 5
→ unit digit 0 in last = 0 .
Therefore, we can conclude that, the given statement is True .
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Given : All square numbers end with 0,1,4,5,6,9 at units place
To Find : True or False
Solution:
Unit digit of number Unit digit of square of number
0 0
1 1
2 4
3 9
4 6
5 5
6 6
7 9
8 4
9 1
Notice that unit digit in square numbers are
0 , 1 , 4 , 5 , 6 and 9
Hence All square numbers end with 0,1,4,5,6,9 at units place. is TRUE
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