Correct Answer: 222

Solution : Given:
520 : 738 :: ? : 350

First, find the cube of the number and add the same number to the resultant number.
Like, 520 : 738→8 ³ + 8 = 512 + 8 = 520; 9 ³ + 9 = 729 + 9 = 738
Similarly, follow the same pattern for 350 : ?→7 ³ + 7 = 343 + 7 = 350
Let's check the options –
First option: 220; 6 ³ + 6 = 216 + 6 = 222 ≠ 220
Second option: 222; 6 ³ + 6 = 216 + 6 = 222
Third option: 230; 6 ³ + 6 = 216 + 6 = 222 ≠ 230
Fourth option: 248; 6 ³ + 6 = 216 + 6 = 222 ≠ 248

So, only the second option follows the same pattern as followed by the given pair. Hence, the second option is correct.