Question

84^628 + 625^231 × 694 ^157​

Answer 1

Answer:

I am not able to give the answer of your questions.

Answer 2

The unit digit of$84^{628}+625^{231}\times 694^{157}$ is "6".

Step-by-step explanation:

We have,

$84^{628}+625^{231}\times 694^{157}$

= $4^{628}+5^{231}+4^{157}$

∵ $4^{628}=6$, because 628 is divisible by 2.

The unit digit of:

5^{231} = 5 and

$4^{157} = 4^{2\times 78+1} =4^{1} =4$

∴ The unit digit of$84^{628}+625^{231}\times 694^{157}$

= 6 + 5 × 4

= 6 + 20 = 26

= 6, is the unit digit.

Hence, the unit digit of$84^{628}+625^{231}\times 694^{157}$ is 6.