Select the number from among the given options that can replace the question mark (?) in the following series.
21, 22, 44, 47, 188, ?
$$21\times1+1 = 21+1 =Â 22$$
$$44\times1+3 = 44+3Â =Â 47$$
$$188\times1+5 = 188+5 = 193$$
Hence '193' will come in place of the question mark.
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