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Byju's Answer
Standard XII
Mathematics
Sequence
Find the wron...
Question
Find the wrong term in sequence :
11, 21, 43, 85, 171, 343
A
21
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B
85
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C
171
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D
343
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Solution
The correct option is
D
343
Double the numbers and then subtract and and add one alternatively
∴
171 x 2 - 1 = 341 Thus 343 is the odd man out
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