Question

54 + 636 + 45 + 32 + 52? Find unit digit

Answer 1

If we plus them all then we will get 819 as our answer

Answer 2

Given,

The given sum is = 54+636+45+32+52

To find,

The unit digit of the final answer of the given sum.

Solution,

We can simply solve this mathematical problem by using the following mathematical process.

Here, we don't need to add all the numbers, we just need to add unit digit of each number to get the final unit digit.

Unit digits of each number are = 4,6,5,2,2

By adding them,we get,

= 4+6+5+2+2

= 19

Unit digit = 9

So, 9 will be the unit digit the the final answer of the given sum also.

Hence, the unit digit will be 9