Question

The units digit in the expansion of
${44}^{44} + {55}^{55} + {88}^{88}$
is

Answer 1

Unit digit of 44⁴⁴ is 4.

Unit digit of 55^55 is 5.

Unit digit of 88^88 is 6.

So the unit digit is 4 + 5 + 6

= 5

-WonderGirl