Question

If 21st century starts with monday then on the 1st day of 20th century will be?

Answer 1

1st day of 20 th century will be started on Monday

Answer 2

Given:

The time period = 21st century

Time of the week = Monday

To Find:

The first day of 20th century

Solution:

The first day of the 20th century was = 01/01/1901

Therefore,

The day without a reference date is figured out using the formula -

Century Code + Year Code + Month Code + Date Code/7

Day codes

Mon - 1

Tue - 2

Wed - 3

Thu - 4

Fri - 5

SAt - 6

Month codes

Jan - 0

Feb and March - 3

Apr - 6

May - 1

Jun - 4

July - 6

Aug - 2

Sep - 5

Oct - 0

Nov - 3

Dec - 5

Similarly,

1900 - 1999 century is 0

Subtituting the values -

0 + 1 + 0 + 1/7

= 2/7

The code 2 is four Tuesday

Answer: 1st day of 20th century will be Tuesday

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