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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.
1 : 7 :: 3 : 215 :: 4 : ?

Option 1: 453

Option 2: 342

Option 3: 511

Option 4: 363


Team Careers360 24th Jan, 2024
Answer (1)
Team Careers360 25th Jan, 2024

Correct Answer: 511


Solution : Given:
1 : 7 :: 3 : 215 :: 4 : ?

In the given pairs, multiply the first number by 2, then find the cube of that number, and then subtract 1 from the resultant, to get the second number.
Like, 1 : 7→1 × 2 = 2; (2) 3 = 8; 8 – 1 = 7
3 : 215→3 × 2 = 6; (6) 3 = 216; 216 – 1 = 215
Similarly, follow the same pattern for 4 : ?→4 × 2 = 8; (8) 3 = 512; 512 – 1 = 511

So, 511 is related to 4 in the same way as the second number is related to the first number and the fourth number is related to the third number. Hence, the third option is correct.

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