In the following question, select the missing number from the given series.
23, 29, 24, 30, 25, ?
'6' and '5' are alternatively added and subtracted respectively.
23 + 6 = 29
29 - 5 = 24
24Â + 6 =Â 30
30Â - 5 =Â 25
25Â + 6 =Â 31
=> Ans - (B)
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