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Which of the following cannot be the unit digit of 8ⁿ, where n is a natural number ?
State true or false for each of the following statements and justify in each case :
Assertion (A): 4ⁿ ends with digit 0 for some natural number n. Reason (R): For a number 'x' having 2 and 5 as its prime factors, xⁿ always ends with digit 0 for every natural number n.
n² – 1 is divisible by 8, if n is
State the "Fundamental Theorem of Arithmetic" and use it to find LCM of 36 and 54.
3ⁿ, where n is a natural number, cannot end with the digit :
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