2007-10-14 22:38:24 · 6 answers · asked by The O 1 in Science & Mathematics ➔ Mathematics
23 + 1 = 30 (base 4)
20 - 1 = 13 (base 4)
2007-10-14 22:45:22 · answer #1 · answered by Tom :: Athier than Thou 6 · 0⤊ 0⤋
30 base 4 comes after 23 base 4 and 13 base 4 comes before20 base 4
the way to solve this isjust add 1 in 23 u get 24 but in base 4 conotation there are only 4 digits 0,1,2,3 so 24 is not possible so u increase the tens place by 1 and the units place takes 0 so u get 30
similary when u subtract 1 from 20 base 4 20-1 shud be 19 but since there is no 9 in the base 4 syatem so u will have to put the highest number in the base 4 syatem instead so u get 13
2007-10-14 22:45:39 · answer #2 · answered by shubham_nath 3 · 1⤊ 0⤋
Counting in Base 4 ....
00
01
02
03
10
11
12
13 <=== before 20 in Base 4
20
21
22
23
30 <=== after 23 in base 4
31
32
33
2007-10-14 23:21:35 · answer #3 · answered by ideaquest 7 · 0⤊ 0⤋
after 23 comes 30
before 20 is 13
2007-10-14 23:37:40 · answer #4 · answered by Ivan D 5 · 0⤊ 0⤋
30 and 13
2007-10-14 22:44:53 · answer #5 · answered by st n 2 · 0⤊ 0⤋
___4___1
___2___3
___3___0 (is next number)
___4___1
___2___0
___1___3 (is previous number)
2007-10-14 23:57:49 · answer #6 · answered by Como 7 · 0⤊ 0⤋