IMO- Mathematics Olympiad (SOF) Class 10: Questions 327 - 332 of 958

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Question number: 327

» Arithmetic Progressions

MCQ▾

Question

A number 144 is divided into four parts that are in A. P. such that the product of the first and fourth is to the product of the second and third is . Find the largest part.

Choices

Choice (4) Response

a.

48

b.

56

c.

54

d.

46

Question number: 328

» Arithmetic Progressions

MCQ▾

Question

Between the numbers 2 and 20,8 means (such that 10 numbers are in arithmetic progression) are inserted, then their sum is ________

Choices

Choice (4) Response

a.

176

b.

44

c.

88

d.

60

Question number: 329

» Arithmetic Progressions

MCQ▾

Question

Between the numbers 6 and 60,28 means (such that 10 numbers are in arithmetic progression) are inserted, then their sum is ________

Choices

Choice (4) Response

a.

1881

b.

1914

c.

1526

d.

1836

Question number: 330

» Arithmetic Progressions

MCQ▾

Question

A number 20 is divided into four parts that are in A. P. such that the product of the first and fourth is to the product of the second and third is . Find the largest part.

Choices

Choice (4) Response

a.

4

b.

8

c.

9

d.

12

Question number: 331

» Arithmetic Progressions

MCQ▾

Question

The number of terms common between the two series Up to 50 terms and the series up to 60 terms is ________

Choices

Choice (4) Response

a.

24

b.

26

c.

20

d.

25

Question number: 332

» Statistics & Probability

MCQ▾

Question

The mean of 12 observations is. By error, one observation was noted as was misread as 21. Then the correct mean is ________

Choices

Choice (4) Response

a.

23.25

b.

28.25

c.

27.25

d.

29.25

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