Question

7 A bag contains cards numbered from 1 to 100. A card is drawn at random from the bag. Find
the probability that the :
a) Card bears a number which is multiple of 5.
b) Card bears a number which is greater than or equal to 80.​

Answer 1

Step-by-step explanation:

Given coordinates of four points in a plane, find if the four points form a square or not.

To check for square, we need to check for following.

a) All fours sides formed by points are the same.

b) The angle between any two sides is 90 degree. (This condition is required as Quadrilateral also has same sides.

c) Check both the diagonals have the same distance