eighteen – seven = one
nine + ten = fifteen
two x one = _____
one four two zero _____ million
zero, twenty, six, two, five, four, two, six, _____
Seventeen (9 letters- 8-5 for eighteen-seven = 3 for one, & 4+3=7.)
I could make 1, 4, or 6 fit this pattern, but the first one that popped into my head was 3. (sucessor of every other number).
Mine: try & guess how I got 1, 4, & 6 for #2
Correct.
I notice you’re using numerals. That’s not what I put. 
No, neither 1, 4 or 6 were what I had in mind.
Forty-one? If not, fifty-one?
If I’m correct, the position of the ‘o’ in the word determines the place on the list. I’m not sure if I’m allowed to ignore the first ‘o’ in forty-one, hence my second guess.
And naturally, I miscount. Even if my method was right, my guesses were wrong. I’ll have to think about it for a bit before I guess again.
googol?
That certainly works. It’s the only one I can think of that does, off-hand.
I didn’t come up with this one, but I can’t remember where I saw it.
1
11
21
1211
111221
312211
What’s the next line?
13112221?
If I’m correct, each line “describes” the previous one. The first line is a single 1, so the second line says “one 1”. That is two ones, so the third line says “two 1s”, which the fourth line describes as “one 2 and one 1”, and so on.
That’s correct.
Orangutangs really like orange = 2867 122 86 731 1241 5183 142 86 731 1139 6901 6283 671 22 74 1369 3589 9991 3811 851 713 341 1133 4841 2867 122 86 731 187
5893 1909 989 1333 1147 407 1133 7313 5893 1909 989 1333 1147 407 1133 3811 851 1633 5041 2627 407 1133 309 6 142 = ?