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Answer:
19xx could be a birth year, easy to remember
2580 is easy to remember because on a keypad the numbers are aligned vertically.
Note that from the statement above, one can say that 19xx is common as it is linked with birth year and thus easy to recur and also 2580 is very easy to recur because on a keypad the numbers are soften matched vertically.
What is pin about?
Pin or digit code are often used in our debit cards, credit cards and in a lot of mobile phones for security purposes.
Note that Note that from the statement above, one can say that 19xx is common as it is linked with birth year and thus easy to recur and also 2580 is very easy to recur because on a keypad the numbers are said to be aligned vertically.
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