11, 10, ?, 100, 1001, 1000, 10001
  • 1101
  • 2110
  • 3111
  • 4None of these
Answer:- 1
Explanation:-

Solution:
The pattern is - 1, x 10 + 1, - 1, x 10 + 1, - 1, x 10 + 1, .....
So, missing term = 10 x 10 + 1 = 101.

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