IQ Quiz 80 IQ Quiz Questions and Answers. Please enter your email: 1. The sum of two numbers is twice their difference. If one of the numbers is 10, the other one is : -3.33 17-Apr 3 1/ 3 30 2. The sum of three consecutive odd numbers is 57. The middle one is : 23 19 21 17 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? 5 9 3 6 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 : 195 40 126 69 5. 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 : 87 69 96 78 6. 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: 16 104 58 32 7. 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: 48 56 36 64 8. 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: 32 23 72 27 9. If one-seventh of a number exceeds its eleventh part by 100, then the number is : 770 1825 1100 1925 10. A number consists of two digits whose sum is 8. If 18 is added to the number, its digits are interchanged. The number is: 35 53 62 26 Loading … Question 1 of 10 Previous PostGeneral Knowledge 34 Next PostESL EFL Test 70