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Question

Complete the series given below by choose the missing term out of the given alternatives.
220, 200, 100, 80, 40, 20, ?

A
20
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B
10
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C
30
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D
40
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Solution

The correct option is B 10
subtract 20 and divide by 2 operation done on alternate terms.
-20, /2, -20, /2, -20, /2
option B

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