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
12th place?​

Answer 1

Answer:

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