Question

Which of the following is/are a constant/constants ?

• A. Number of days in a week
• B. Temperature of a place in a day at different times
• C. Number of months in a year
• D. $3x{y}^2+14$

Answer 1

Answer: (A), (C)

The correct options are
A Number of days in a week
C Number of months in a year

Constants have a fixed value.The number of days in a week and the number of months in a year always remains the same. So these are constants.

The temperature of a place in a day at different times will be different, so it is a variable not a constant.

$3x{y}^2+14$ contains two variables $x$ and $y$, so its not a constant.