Explanation:

- The relation between the first number (350) and the second number (5) is determined by dividing 350 by a certain number to get 5.

- 350 divided by 70 equals 5.

- Similarly, for the fifth number (990) and the sixth number (9), 990 divided by 110 equals 9.

- We need to find a number such that when divided by 162 (similarly to the previous patterns), it equals the third given number, 13.

- For option 1 (1620), 1620 divided by 13 equals 124.615, not an integer.

- For option 2 (1950), 1950 divided by 13 equals 150, an integer.

- For option 3 (1258), 1258 divided by 13 equals 96.7692, not an integer.

- For option 4 (1052), 1052 divided by 13 equals 80.9231, not an integer.

Therefore, the correct answer is option 2, 1950.

.