Answer:
The next number is 123454321
Step-by-step explanation:
Given the sequence of numbers
1, 121, 12321, 1234321, ...
we have to find the next number in the sequence.
First number - 1
Second number- 121
Third number - 12321
Fourth number - 1234321
we have to find the fifth number
In the first term the number is 1. The second term starts from zero goes to 2 then end with 1. Third number starts wit 1 goes to 3 and then end with 1. Fourth number starts with 1 goes to 4 ten end with 1.
Similarly follow same manner
Fifth term starts with 1 goes to 5 then end with 1 i.e 123454321
