Sagot :
1-10 = 2 one's digit
11-20 = 10 one's digit
21-22 = 1 one's digit
2+10+1=13
So she wrote the digit 1, 13 times
11-20 = 10 one's digit
21-22 = 1 one's digit
2+10+1=13
So she wrote the digit 1, 13 times