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Select the option which is related to fifth number in the same way as second number is related to first number and fourth
number is related to third number.
(Note: Numbers must be operated on whole numbers, without dividing them into their constituent digits. For example on 13 -
13 arithmetic operations like addition/subtraction/multiplication etc. can be done in 13. Dividing 13 into 1 and 3 and then doing
arithmetic operations on 1 and 3 is not allowed.)
20 : 30 :: 42 : 56 :: 72 : ?
96
84
82
90
- Let's break down the relationships:
- First relationship (20 : 30): Add 10 to 20 to get 30.
- Second relationship (42 : 56): Add 14 to 42 to get 56.
- Based on this pattern, it seems we are adding increasing numbers by 4 each time (10, 14...).
- Third relationship (72 : ?):
- Following the pattern, add 18 to 72.
- 72 + 18 = 90.
- Analyzing Options:
- Option 1, 96: Doesn't match our result.
- Option 2, 84: Doesn't match either.
- Option 3, 82: Not correct.
- Option 4, 90: Correct!
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