52, 28, 33, 63, 73, 23, 56..

條問題是英文版才有得答
"What is the next number in this sequence?"
Convert each letter in the question to a number, making A=1, B=2, etc. through Z=26.

"What" becomes 23+8+1+20, thus 52
"is" becomes 9+19, thus 28
"the" becomes 20+8+5, thus 33

Keep going until "this" becomes 20+8+9+19, thus 56

"sequence" becomes 19+5+17+21+5+14+3+5, thus 89

so 89 is the next number.

下1個數字是26
因為23,52/2=26,56/2=28,28,63/2=31.5,33,73/2=37.5 37.5-33=4.5 33-31.5=1.5 31.5-28=3.5 28-28=0 28-26=2 26-23=3 37.5-23=14.5
4.5+1.5+3.5+0+2+14.5=26