Arithmetic Progressions (IMO- Mathematics Olympiad Class 10): Questions 18 - 23 of 84

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Question number: 18

» Arithmetic Progressions

MCQ▾

Question

In an A. P. , the sum of first n terms is 3n22+5n2 , find its 25th term

Choices

Choice (4) Response

a.

78

b.

75

c.

76

d.

79

Question number: 19

» Arithmetic Progressions

MCQ▾

Question

Four numbers are inserted between the numbers 10 and 40 such that an A. P. results. Find the biggest of these four numbers.

Choices

Choice (4) Response

a.

34

b.

38

c.

35

d.

39

Question number: 20

» Arithmetic Progressions

MCQ▾

Question

If the sum of three consecutive terms of an increasing A. P. is 18 and the product of the first and third of these terms is 35, then the third term is ________

Choices

Choice (4) Response

a.

3

b.

12

c.

0

d.

7

Question number: 21

» Arithmetic Progressions

MCQ▾

Question

If b1,b2,b3,. Belongs to A. P. such that b1+b4+b7++b34=1200 , then the value of b1+b2+b3++b34 equals ________

Choices

Choice (4) Response

a.

2400

b.

6116

c.

1308

d.

1900

Question number: 22

» Arithmetic Progressions

MCQ▾

Question

If the mth term of an A. P. is 1n and nth term is 1m , then the mnth terms is ________

Choices

Choice (4) Response

a.

4

b.

2

c.

1

d.

3

Question number: 23

» Arithmetic Progressions

MCQ▾

Question

If b1,b2,b3,. Belongs to A. P. such that b1+b6+b11++b46=400 , then the value of b1+b2+b3++b46 equals ________

Choices

Choice (4) Response

a.

1840

b.

4582

c.

1325

d.

1654

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