An integer is chosen at random and squared. The probability that the last digit of the square is $1$ or $5$ is
An integer is chosen at random and squared. The probability that the last digit of the square is $1$ or $5$ is
- A
$\frac{2}{{10}}$
- B
$\frac{3}{{10}}$
- C
$\frac{4}{{10}}$
- D
$\frac{9}{{25}}$
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- [KVPY 2011]
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