Question

how to devide please explain and what is remainder
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Answer 1

Answer:

1) Ans is 1

Step-by-step explanation:

Step 1 is to notice that 342 = 343 -1, and of course, 343 = 7^3, so 342 = (7^3) - 1.  

Step 2 is to remember that (a^n - 1) is divisible by (a^m - 1) if n is divisible by m. Obviously, 84 is divisible by 3. Therefore:  

[(7^84) - 1] must be divisible by [(7^3) - 1] = 342

If 342 goes evenly into [(7^84) - 1], then it must divide into (7^84) leaving a remainder of 1.