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Question : Directions: In the following question, a series is given with one number missing. Select the missing number from the given alternatives.
11, 8, 4, –1, ?
Option 1: –5
Option 2: 5
Option 3: –6
Option 4: –7
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Answer (1)
Correct Answer: –7
Solution : Given:
11, 8, 4, –1, ?
Subtract consecutive natural numbers (starting with 3) from the numbers, to obtain the required missing number.
11 – 3 = 8; 8 – 4 = 4; 4 – 5 = –1; –1 – 6 = –7
So, –7 is the required missing number. Hence, the fourth option is correct.
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