Which of the following will have ‘7’ at the unit place of its square root?*a) 113569b) 31567c) 8281d) 26813
Question
Which of the following will have ‘7’ at the unit place of its square root?
- a) 113569
- b) 31567
- c) 8281
- d) 26813
Solution
The square root of a number ends with '7' if the number itself ends with '9'. This is because 7*7 = 49.
Let's check the options:
a) 113569 - This number ends with '9', so it's possible that its square root ends with '7'.
b) 31567 - This number ends with '7', so its square root will not end with '7'.
c) 8281 - This number ends with '1', so its square root will not end with '7'.
d) 26813 - This number ends with '3', so its square root will not end with '7'.
So, the answer is option a) 113569.
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