Subject :IMO Class : Class 5
Complete the number pattern using suitable numbers for following question.
1, 121, 12321, 1234321, _____.
(A) 123454321
(B) 12354321
(C) 12345321
(D) 1234554321
What was the use of the highlighted portion?
Ans 1:
Class : Class 5
A) 123454321