question_answer

All the five digit numbers in which each successive digit exceeds is predecessor are arranged in the increasing order. The \[{{(105)}^{th}}\] number does not contain in the digit

A) \[1\]                                     

B) \[2\]

C) \[6\]                                     

D)  All of these

Correct Answer: A

Solution :

                \[{{=}^{8}}{{C}_{4}}=70\]                 \[{{=}^{7}}{{C}_{4}}=35\]