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Sam’s sister remembers that Sam’s birthday is after 23rd October but before 27th October and her mother remember that Sam’s birthday is after 25th October but before 29th October. On which day is Sam’s birthday in the year 2020?

Sam’s sister remembers that Sam’s birthday is after 23rd October but before 27th October and her mother remember that Sam’s birthday is after 25th October but before 29th October. On which day is Sam’s birthday in the year 2020? Correct Answer Monday

The number of odd days for 2000 years = 0

For the years from 2001 to 2020, the number of odd days is = 25 ÷ 7 = 4 odd days

Thus, on 31st December 2020, it is Thursday.

On combining the above question,

we know Sam’s birthday is after 25th October but before 27th October which means his birthday is on 26th October 2020.

Now we calculate the number of days between 26th October 2020 and 31st December 2020 = 66 days

The number of odd days is = 66 ÷ 7 = 3 is quotient

Thus, Sam’s birthday is on Monday.

Hence, the correct answer is Monday.

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