1⟩ Which number should replace the question mark? 8 5 2135 32 1232 28 314 ? 28A. 3B. -2C. -6D. 48
Correct answer: C
(For each row subtract the second column from the first column. The result is equal to the sum of the digits in the last column.)
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Correct answer: C
(For each row subtract the second column from the first column. The result is equal to the sum of the digits in the last column.)
Correct answer: D
Explanation: 3+5=8, 5+8=13 and so on.
Correct answer: A
(For each row the sum of the first two columns is equal to the multiple of the last two columns)
Correct answer: C
Explanation: The pattern decreases progressively: -1, -2, -3, -4, -5