Question : Directions: Select the option that is related to the fifth number in the same way as the first number is related to the second number and the third number is related to the fourth number.
19 : 359 :: 17 : 287 :: 21 : ?
Option 1: 449
Option 2: 439
Option 3: 441
Option 4: 433
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Correct Answer: 439
Solution :
Given:
19 : 359 :: 17 : 287 :: 21 : ?
Like, 19 : 359→(19)
2
– 2 = 361 – 2 = 359
17 : 287→(17)
2
– 2 = 289 – 2 = 287
Similarly, follow the same pattern for 21 –
(21)
2
– 2 = 441 – 2 = 439
So, 439 is the required answer. Hence, the second option is correct.
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