Capricious

Riddle: Give me an x, I'll stand to face you. Give me a cross, I'll turn my back on you. What am I?

Answer: The Number 9 (9 multipled by 9 = 81, 9 plus 9=18).

Source: https://www.riddles.com/41

Give me an x, I'll stand to face you. Give me a cross, I'll turn my back on you. What am I? — Capricious by Anonymous v1.

Riddle: Give me an x, I'll stand to face you. Give me a cross, I'll turn my back on you. What am I? Answer: The Number 9 (9 multipled by 9 = 81, 9 plus 9=18). — by Anonymous v2.