There are 20 occurrences of the digit 9 from 1 to 100. This includes the numbers 9, 19, 29, 39, 49, 59, 69, 79, 89, and 90 through 99. In total, the digit appears once in each of these ten numbers and twice in the numbers 90 to 99, adding up to 20.
100 / 9 = 11 remainder 1
The centi- prefix means one hundredth 1/100 Thus 1 cm = 1/100 m So 1 m = 100/100 m = 100 × 1/100 m = 100 cm 9 m = 9 × 100 cm = 900 cm
20
1. The factors of 9 are 1, 3, and 9. 9 is not a factor of 100. Neither is 3. So the greatest common factor between 9 and 100 is 1.
11 with 1 remaining 100 - 1 = 99 = 9 x 11
100 / 9 = 11 remainder 1
11
The centi- prefix means one hundredth 1/100 Thus 1 cm = 1/100 m So 1 m = 100/100 m = 100 × 1/100 m = 100 cm 9 m = 9 × 100 cm = 900 cm
1-100 depending on model
20
1. The factors of 9 are 1, 3, and 9. 9 is not a factor of 100. Neither is 3. So the greatest common factor between 9 and 100 is 1.
100 has 9 factors: 1, 2, 4, 5, 10, 20, 25, 50 and 100.
It is 100*1/9 = 100/9 = 11.111... (recurring) %
101
11 (9, 18, 27, 36, 45, 54, 63, 72, 81, 90 and 99) Those numbers divisible by 9 are the multiple of 9; thus need to know how many multiples of 9 there are between 1 and 100: 100 ÷ 9 = 11 r 1 ÷ last multiple of 9 is 11 × 9 (= 99) → There are 11 - 1 + 1 = 11 numbers between 1 and 100 which are divisible by 9. (They are 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99.)
9 * 99 = 9 * (100 - 1) = 9*100 - 9*1 = 900 -9 = 891
% rate := 1/9 x 100%= (1 ÷ 9) x 100%= 0.1111 x 100%= 11.11%