The answer is 0.04 I am unsure how this can be arrived at.

My understanding is that any integer ending in 1 will always end in 1 when raised to any positive integer.

No even number will ever end in 1 when raised to any positive integer.

Numbers ending in 9 will end in a 1 when raised to any multiple of 2

Numbers 3 and 7 will end in 1 when raised to any multiple of 4.

Numbers ending in 5 will never end in a 1.