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Study the following alphanumeric series ...

Study the following alphanumeric series carefully and answer the questions given below:
574 658 821 945 247
If one is added to the last digit of each of the numbers, in how many numbers thus formed will the last digit be a perfect square (1 is also be a perfect square)?

A

One

B

Two

C

three

D

four

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The correct Answer is:
D
after adding 1 last digit = 5,9,2,6,8 only 9 is a perfect square.
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