# IMO Level 1- Mathematics Olympiad (SOF) Class 10: Questions 626 - 631 of 968

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## Question 626

### Question

MCQ▾

The value of is ________

### Choices

Choice (4)Response

a.

97

b.

92

c.

99

d.

96

## Question 627

### Question

MCQ▾

The sum of all terms of the arithmetic progression having ten terms except for the first term, is 126, and except for the sixth term, 62. Find the third term of the progression if the sum of the first and the fifth term is equal to 16.

### Choices

Choice (4)Response

a.

9

b.

7

c.

8

d.

3

## Question 628

### Question

MCQ▾

The sum of the first term and the fifth term of an ascending A. P. is 30 and the product of the second term by the fourth term is 200. Find the sum of the first seven terms of this A. P

### Choices

Choice (4)Response

a.

130

b.

190

c.

140

d.

160

## Question 629

### Question

MCQ▾

The sum of all terms of the arithmetic progression having ten terms except for the first term, is 99, and except for the sixth term, 89. Find the third term of the progression if the sum of the first and the fifth term is equal to 10.

### Choices

Choice (4)Response

a.

10

b.

8

c.

5

d.

15

## Question 630

### Question

MCQ▾

If the term of an A. P. is and term is , then the sum of first terms is ________

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 631

### Question

MCQ▾

If four numbers are in A. P. such that their sum is 20 and the greatest number is 2 times the least, then the numbers are ________

### Choices

Choice (4)Response

a.

b.

c.

d.