Question

A normal year has 365 days but a Leap Day has 366 days. The leap day is an extra, or
intercalary, day which is added it to the shortest month of the year, February.
In the Gregorian calendar, three criteria must be taken into account to identify leap years:
The year is exactly divisible by 4;
If the year is exactly divisible by 100, then it is not a leap year, unless the year is also
divisible by 400.
定的,会是在产学,可以
Question 1: Is the year 2020 a leap year?
Question 2: What fraction of months in the year 2020 have 31 days?
16/12 07/12 1115/12
(iv)8/12
Question 3: What fraction of months in the year 2020 have 30 days?
16/12
ii) 4/12
iii)5/12
(iv)3/12
Question 4: Is it true that one-twelfth part of year 2020 has 29 days.
Give reasons to support this statement.
Question 5: Assertion(A): The year 1900 was not a leap year
Reasoni: 1900 is divisible by 100.
Reason2: 1900 is not divisible by 400.
Reason3: 1900 is divisible by 4.
Circle Yes/No for each of the following statements:
Statements
Yes/No
(a )Reason 1 is true and is correct explanation for A Yes/No
(b) Reason 3 is true and is correct explanation for A Yes/No
(c) Reason 2 is true and is correct explanation for A Yes/No
(d) Assertion is true
Yes/No​

Answer 1

Answer:

Yes 2020 is a leap year. Hope I help you

Answer 2

Originally there are 365$\frac{1}{4}$ days in a year but, to avoid confusion it is conventionally added after every 4 years as an extra day to the shortest month of the year, February.

• 2020 is a leap year as it can be divided by 4 and also it is already not divisible by 100.
• The number of months that have 31 days remains the same for any year i.e. 7. Hence the fraction of months that have 31 days in 2020 will be 7/12. (option ii)
• Similarly the number of months that have 30 days also remains the same for every year i.e. 4. Hence the fraction of months that have 30 days in 2020 will be 4/12. (option ii)
• No, this statement is not true as the number of days in each month is not the same so we cannot consider every month to be an equal part of the year. Also, this statement will be mathematically wrong as according to this 29 × 12 = 366, which is false.
• Reason 1 and Reason 2 are true as they are according to the Gregorian calendar criteria.

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