Question

If from $8$ to $80$ all the squared numbers and those numbers the sum of whose digits is $9$ are arranged in descending order, then which number will be at $7$th place?

• A. $36$
• B. $49$
• C. $45$
• D. $30$

Answer 1

The correct option is A $36$

Squared Numbers in between 8 and 80 are

9 16 25 36 49 64

Numbers whose sum of digits are 9 are:

9 18 27 36 45 54 63 72

So arranging these all in descending order gives:

72 64 63 54 49 45 36 27 25 18 16 9

at $7^{th}$ place is 36

option A