In which of the following situations do we use approximation?
(i) The number of people watching a particular television show.
(ii) The number of people travelling between two destinations per day.
(iii) The number of students in a class.
(iv) The number of people participating in a procession.
A) i, ii
B) ii, iii
C) iii, iv
D) i, ii, iv
34 + 56 = 90, where 34, 56 and 90 are whole numbers, satisfies ____ property of whole numbers under addition.
Every multiple of a given number is greater than or equal to the number.
The interior of a curve together with its boundary is called its region.
A polygon having 3 sides is called a ____.
The sum of two integers is -401. If one of them is -90, then the other number is ____.
The decimal form of five hundreds three tens two ones and eight tenths is ____.
If the length of a rectangle is l and its breadth is b, then its perimeter is ____.
A) l + b
B) l + 2b
C) 2l + b
D) 2l + 2b
A toy is placed in front of a mirror at a distance of 80 cm from it, then the reflected image is formed at a distance of ____ cm from the mirror.