Statistics & Probability (IMO- Mathematics Olympiad (SOF) Class 10): Questions 77 - 80 of 80

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 958 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 450.00 or

Question number: 77

» Statistics & Probability

MCQ▾

Question

The mean of eight numbers is 30. If one number is excluded, then their mean is 34, the excluded number is ________

Choices

Choice (4) Response

a.

5

b.

2

c.

8

d.

6

Question number: 78

» Statistics & Probability

MCQ▾

Question

The mean of 10 observations is. By error, one observation was noted as was misread as 24. Then the correct mean is ________

Choices

Choice (4) Response

a.

21

b.

27

c.

25

d.

23

Question number: 79

» Statistics & Probability

MCQ▾

Question

A drawer contains 8 red socks, 12 white socks and 10 blue socks. Without looking you draw out a sock and then draw out a second sock without returning the first sock. What is the probability that the first sock and second sock are both white?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 80

» Statistics & Probability

MCQ▾

Question

Kruti took a loan at simple interest at in the first year with increases of in each subsequent year. She paid as interest after 4 years. How much loan did she take?

Choices

Choice (4) Response

a.

Rs. 15800

b.

Rs. 30000

c.

Rs. 12500

d.

Rs. 33250

f Page
Sign In