Q16 of 34 Page 1

Probability of an event E + Probability of the event ̅E (not E) is, _______

Probability of an event E + Probability of the event ̅E (not E) is, 1.


More from this chapter

All 34 →
14

A bag contains 3 red balls and 5 black balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is red?

OR


A die is thrown once. What is the probability of getting a prime number?


15

A tower stands vertically on the ground. From a point on the ground, which is 15m away from the foot of the tower, the angle of elevation of the top of the tower is found to be 60°.Find the height of the tower.

17

Mathematics teacher of a school took her 10th standard students to show Red fort. It was a part of their Educational trip. The teacher had interest in history as well. She narrated the facts of Red fort to students. Then the teacher said in this monument one can find combination of solid figures. There are 2 pillars which are cylindrical in shape. Also 2 domes at the corners which are hemispherical.7 smaller domes at the centre. Flag hoisting ceremony on Independence Day takes place near these domes.


i. How much cloth material will be required to cover 2 big domes each of radius


2.5 metres? (Take 18

Class X students of a secondary school in Krishnagar have been allotted a rectangular plot of a land for gardening activity. Saplings of Gulmohar are planted on the boundary at a distance of 1m from each other. There is a triangular grassy lawn in the plot as shown in the fig. The students are to sow seeds of flowering plants on the remaining area of the plot.


Considering A as origin, answer question (i) to (v)


i. Considering A as the origin, what are the coordinates of A?


a) (0,1) b) (1,0) c) (0,0) d)(-1,-1)


ii. What are the coordinates of P?


a) (4,6) b)( 6,4) c) (4,5) d) (5,4)


iii. What are the coordinates of R?


a) (6,5) b) (5,6) c) ( 6,0) d) (7,4)


iv. What are the coordinates of D?


a) (16,0) b) (0,0) c) (0,16) d) (16,1)


v. What are the coordinate of P if D is taken as the origin?


a) ( 12,2) b ) (-12,6) c) (12,3) d) (6,10)