Number Analogy
Practice and master this topic with our carefully crafted questions.
In Number analogy section deals with two types of questions:
I. Choosing a similarly related pair as the given number pair on the basis of the relation between the numbers in each pair.
II. Choosing a number similar to a group of numbers on the basis of certain common properties that they possess.
In all the numbers, (1st digit + 3rd digit) - middle digit = 10. Thus, 5 + 8 - 3 = 10, 7 + 5 - 2 = 10, 8 + 3 - 1 = 10.
In all the numbers, the sum of digits is 12 and the greatest digit lies in the middle.
In all the numbers, the product of the first and last digits is a multiple of the sum of the middle two digits. Thus, 4 × 8 = 32 is a multiple of ( 7+ 1 ), i.e., 8, 5 × 7 = 35 is a multiple of ( 6 + 1 ), i.e., 7 and so on.
The first digits of the numbers form the series 1, 2, 3, 4. The second digits of the numbers form the series 3, 4, 5, 6. The last digits of the numbers form the series 4, 6, 8. 0.
In all the numbers, the middle digit is the sum of the product of other two digits. Now, 9 × 2 = 18, 1 + 8 = 9 (middle digit in 992); 7 × 3 = 21, 2 + 1 = 3 ( middle digit in 733); 8 × 5 = 40, 4 + 0 = 4 (middle digit in 845) and so on.
The pattern is + 1, +3, +6, .... i.e. +1, +(1, + 2), + (1+ 2 + 3), ........ So, missing term = 15 +(1+ 2 + 3 + 4) = 25.