Question

12,18,28 60,65,35 37,?,51​

Answer 1

Answer: 31

Step-by-step explanation: middle number is written from first and last digit number of the row

Answer 2

Answer:

The missing number in the given series is 31.

Step-by-step explanation:

Given a number series: 12, 18, 28, 60, 65, 35, 37, ?, 51​  

Let us arrange the given 9 numbers into 3 set of numbers in order in a row.

$\begin{array}{ccc}\underline{1}2&18&2\underline{8}\\\underline{6}0&65&3\underline{5}\\\underline{3}7&?&5\underline{1}\end{array}$  

If we see the arrangement of the numbers,

• the first digit of the first number becomes the first digit of the middle number,
• and the second digit of the third number becomes the second digit of the middle number.

Repeating the same logic to the third row of numbers, the first digit 3 is taken from 37 and second digit 1 from 51, makes 31.

Therefore, the missing number in the given series is 31.