Question

if jan 1 2019 was tuesday ,with day of week lies on December 31,2019​

Answer 1

Answer:

Tuesday

Step-by-step explanation:

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Answer 2

Dec 31, 2019 will also be a Tuesday.

Starting from after the first day of the year, every 7th Day is the same day as the first.

eg. 8th January is also a Tuesday,15th is a Tuesday etc.

=> 8-1=7, 15-1=14 ,Hence if their difference is divisible by 7 then it's the same day.

Now December 31st is the 365th Day of the year as it is not a leap year.

And now 365-1 = 364 which is 7*52.

As their day number is divisible by 7 hence they have the same day of the week.

=> Dec 31st 2019 will also be a Tuesday.