IMO- Mathematics Olympiad Class 10: Questions 342 - 346 of 889

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Question number: 342

» Statistics & Probability

MCQ▾

Question

A Jar contains 20 marbles of two different colours, out of which x are Blue. One Marble is drawn at random. If 10 more blue marbles are put in the jar, the probability of drawing a blue marbles now will be double that of the previous probability of drawing a blue marbles. Then, the value of x is ________

Choices

Choice (4) Response
a.

5

b.

8

c.

2

d.

9

Question number: 343

» Statistics & Probability

MCQ▾

Question

The king, queen and jack of clubs are removed from a deck of 52 playing cards and then well-shuffled. One card is selected from the remaining cards. The probability of getting a club is ________

Choices

Choice (4) Response
a.

1049

b.

149

c.

1349

d.

349

Question number: 344

» Statistics & Probability

MCQ▾

Question

When two dice are thrown, the probability of getting a number always greater than 4 on the second dice is ________

Choices

Choice (4) Response
a.

13

b.

136

c.

116

d.

625

Question number: 345

» Coordinate Geometry

MCQ▾

Question

In a ABC , coordinates of A are (1,2) and the equations of the medians through B and C are x+y=5 and x=4 respectively, so the coordinates of B and C are ________

Choices

Choice (4) Response
a.

(5,0),(4,2)

b.

(4,3),(7,2)

c.

(8,3),(4,5)

d.

(7,2),(4,3)

Question number: 346

» Statistics & Probability

MCQ▾

Question

Two dices are thrown simultaneously. The probability of getting sum of atleast 11 is ________

Choices

Choice (4) Response
a.

415

b.

112

c.

511

d.

125

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