Question : Directions: Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number.
20 : 105 :: 30 : 155 :: 50 : ?
Option 1: 255
Option 2: 235
Option 3: 245
Option 4: 265
Correct Answer: 255
Solution :
Given:
20 : 105 :: 30 : 155 :: 50 : ?
Like, 20 : 105→(20 × 5) + 5 = 100 + 5 = 105
And, 30 : 155→(30 × 5) + 5 = 150 + 5 = 155
Similarly, for 50 : ?→(50 × 5) + 5 = 250 + 5 = 255
So, 255 is related to 50. Hence, the first option is correct.
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