By having a photographic memory. Otherwise, repetition is the only thing that lets you learn most things.
It began to expand in size. There is a hole at that point in our knowledge of the early universe but without a doubt the universe began to expand.
9999
8889
The applicable term is assonance, which often creates rhymes.
9774
computers can expand knowledge and help within, although without it, it cannot.
9876 - 123= 9753
The largest 4 digit number with repetition is 9999. The smallest 3 digit number without repetition is 102 9999 - 102 = 9897
Largest 4 digit number with repetition is 9999 Largest 3 digit number without repetition is 987 Difference is 9999 - 987 = 9012.
9876-102 9704
8888
9,876 without any number used more than once, 9,898 without side-by-side repetition, and 9,897 for a number without pattern.