What is the unit digit in 7^{68} – 3^{59} ?

1.	What is the unit digit in 7^{68} – 3^{59} ?
Answer» Answer: From 6^59, we will only GET 6 as the units digit. From 7^71, we will get 7^(68 + 3), ie 3rd term of the CYCLE, ie 3. So EFFECTIVELY the units digit of the EXPRESSION is the units digit of the number 363, which is 4. (as the number is 54). Step-by-step explanation: PLS MARK AS BRAINLIEST

Answer»

Answer:

From 6^59, we will only GET 6 as the units digit. From 7^71, we will get 7^(68 + 3), ie 3rd term of the CYCLE, ie 3. So EFFECTIVELY the units digit of the EXPRESSION is the units digit of the number 3*6*3, which is 4. (as the number is 54).

Step-by-step explanation:

PLS MARK AS BRAINLIEST

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What is the unit digit in 7^{68} – 3^{59} ?

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