Arithmetic Progressions (IMO Mathematics Olympiad Class 10): Questions 73  78 of 84
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Question number: 73
» Arithmetic Progressions
Question
If four numbers are in A. P. such that their sum is 90 and the greatest number is 4 times the least, then the numbers are ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  Question does not provide sufficient data or is vague 

Question number: 74
» Arithmetic Progressions
Question
Between the numbers 7 and 70, 28 means are inserted, then their sum is ________
Choices
Choice (4)  Response  

a.  1695 

b.  1078 

c.  1895 

d.  1795 

Question number: 75
» Arithmetic Progressions
Question
In an A. P, If it is given that then is equal to ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 76
» Arithmetic Progressions
Question
The value of is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 77
» Arithmetic Progressions
Question
If up to n terms and n is even, then S equals________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 78
» Arithmetic Progressions
Question
Let denotes the sum of n terms of an A. P. , whose first term is a. if the common difference d is given by then K is equal to ________ ________
Choices
Choice (4)  Response  

a.  2 

b.  1 

c.  4 

d.  3 
