IQ Quiz 80

IQ Quiz Questions and Answers.

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1. The sum of two numbers is twice their difference. If one of the numbers is 10, the other one is :

 
 
 
 

2. The sum of the squares of two numbers is 68 and the square of their difference is 36. The product of the two numbers is:

 
 
 
 

3. The difference between a two-digit number and the number obtained by interchanging the digits is 27. What is the difference between the digits of the number?

 
 
 
 

4. The sum of seven numbers is 235. The average of the first three is 23 and that of the last three is 42. The fourth number is :

 
 
 
 

5. If one-seventh of a number exceeds its eleventh part by 100, then the number is :

 
 
 
 

6. A certain number of two digits is three times the sum of its digits and if 45 be added to it, the digits are reversed, The number is:

 
 
 
 

7. A number consists of two digits whose sum is 8. If 18 is added to the number, its digits are interchanged. The number is:

 
 
 
 

8. The sum of three consecutive odd numbers is 57. The middle one is :

 
 
 
 

9. Two numbers are such that the ratio between them is 4 : 7. If each is increased by 4, the ratio becomes 3 : 5. The larger number is:

 
 
 
 

10. In a two-digit number, the sum of the digits is 15. If 9 is added to the number, the digits are reversed. The number is :

 
 
 
 

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