Shalu reached her sister's house on 18^th January, 2020 in the morning and left her house on 2^nd April, 2020 at night. For how many days did she stay there?

Correct option is C

Shalu arrived on 18th January 2020 and stayed for the remaining days in January.

January has 31 days.

Days Shalu stayed in January:

31−18+1=14days

February 2020 is a leap year, so it has 29 days.

Shalu stayed for all 29 days of February.

March has 31 days, and Shalu stayed for all 31 days.

Shalu left on 2nd April 2020 (inclusive), so she stayed for:

$$2\text{days in April}.$$

Adding the days from each month:

$$14(\text{January})+29(\text{February})+31(\text{March})+2(\text{April})=76\text{days}.$$