one number in the following series is omitted. what should that number be?

2000 1960 ? 1880 1840 1800 1760

1920
1900
1880
1940
1930
none of these

Question

one number in the following series is omitted. what should that number be?

2000 1960 ? 1880 1840 1800 1760

1920
1900
1880
1940
1930
none of these

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "multiple_choice_formatter", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [ "Number Series" ], "new_concepts": [], "current_concepts": [ "Number Series", "Arithmetic Progressions" ] } ## Identify the pattern of the series $$ \begin{aligned} &2000 - 1960 = 40\ &1880 - 1840 = 40\ &1840 - 1800 = 40\ &1800 - 1760 = 40 \end{aligned} $$ ## Determine the missing value $$ \begin{aligned} &x = 1960 - 40 = 1920\ &1920 - 1880 = 40 \end{aligned} $$

1920

1900

1880

1940

1930

none of these

{ "subject": "Mathematics", "question_type": "Multiple Choice", "knowledge_point": [ "Mathematics", "Algebra", "Number Series" ] }

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QUESTION IMAGE

Question

Explanation:

Identify the pattern of the series

Determine the missing value

Answer: