Question : Directions: What should come in place of the question mark (?) in the given series? 42, 30, ?, 12, 6, 2
Option 1: 24
Option 2: 20
Option 3: 18
Option 4: 22
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Correct Answer: 20
Solution : Given: 42, 30, ?, 12, 6, 2
In the above-given series, subtract even numbers in decreasing order starting from 12 from the previous number to get the next number. 42 – 12 = 30; 30 – 10 = 20; 20 – 8 = 12; 12 – 6 = 6; 6 – 4 = 2 So, the missing number is 20. Hence, the second option is correct.
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