Fair Go Casino Can You Guess The Right Number

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Rightio, all you braniacs out there... here's a little game that will test your mettle!
Just guess the next number in this sequence - 9, 12, 17, 24, 33, ?? - to complete the coupon code for your free spins. Simply enter the number instead of "X" in the coupon code.

Code: NUMBER-X

SO THE ANSWER IS CODE: NUMBER-44

IF AM WRONG PLEASE LET ME KNOW, THANKS

Terms: 25 free spins are on Gem Strike | Maximum cashout limit is $180 | Bonus can be redeemed once and is valid until Sunday | General terms apply.

GOOD LUCK AND HAVE FUN.