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When power of any number have 0 then it gives a value equal to 1. Why ?

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If we divide 2^m by 2^n we get 2^m-n. Now 2^1/2^1=2^0 3^1/3^1=3^0 , 4^1/4^1=4^0. If any number is divided by itself we get 1. So 2^0=1 , 3^0=1 , 4^0=1
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B.Sc Statistics, MBA Finance

We can understand that any number divided by any number is one. Similarly, (X^n)/(X^n) = 1. (X^n)/(X^n) can be written as (X^n) x (X^-n) and this is equal to X^(n-n) {If the numbers have same base then the powers has to be added}= X^0. i.e., X^0 = 1
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Because a raise to power 0 = a raise to power 1 divide by A raise to power 1 that ultimately gives ans 1.
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b.tech in electronices an communication

Power means the number of times the digit is supposed to be multiplied by itself. ex- you can write 2 = 2 x 1 = (2^1) x 1. here you are multiplying "2" only one time to itself. Similarly u can have: 2 = 2 x 1 = (2^1) x 1 4 = 2 x 2 x 1 = (2^2) x 1 8 = 2 x 2 x 2 x 1 = (2^3) x 1 So all the numbers...
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Power means the number of times the digit is supposed to be multiplied by itself. ex- you can write 2 = 2 x 1 = (2^1) x 1. here you are multiplying "2" only one time to itself. Similarly u can have: 2 = 2 x 1 = (2^1) x 1 4 = 2 x 2 x 1 = (2^2) x 1 8 = 2 x 2 x 2 x 1 = (2^3) x 1 So all the numbers are implicitly a multiple of 1(the multiplicative identity, which when multiplied with any number, gives nothing but the original number). Similarly for 2^0 = 1 (because you are multyplying 2 to itself "0 mumer of times". So what you are left with is 1, the multiplicative identity.) ********************************************* Another way to see it may be this : If you have a number raised to some power,say x^a, and the same number raised to another power,say x^b, you can add the exponents while multiplying them. So, x^a X x^b = x^(a+b). Now, raising a number by a positive power is multiplying by itself that many number of times, but raising a number with a negative power means dividing the number with itself that many times. So, x^1 = x. and x^(-1) = 1/x. If a and b are equal and opposite in sign then, a = -b. So, x^a + x^b = x^(a+b), x^(-b) + x^b =x^(-b+b) If we put numbers in the place, taking x = 3, a = 2, b = -2, then x^(-b) + x^b = x^(-b+b) 3^(-2) + 3^2 = 3^(-2+2) 1/(3x3) +(3x3) = 3^0 1/9 x 9 = 3^0 You see, where we are approaching? 3^0 =1. This is true for all numbers except the base of "0" where 0/0 is an indeterminate form. because, you can always divide something(anything greater than 0) into 1 parts to infinity parts, but you cant tell what happens when you divide "nothing(0) into no(0) parts" There are a few other explanations here :http://scienceline.ucsb.edu/getkey.php?key=2626 read less
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Mathematics for JEE Mains/Advanced, XI & XII (All Boards)

Take log on both the sides, you will probably get an idea about it.
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If you multiply "x power n" by x, you obtain "x power (n+1)". So, the product of "x power 0" and x is "x power 1". If x is nonzero, "x power 0" must therefore be equal to 1.
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If you multiply "x power n" by x, you obtain "x power (n+1)". So, the product of "x power 0" and x is "x power 1". If x is nonzero, then "x power 0" must therefore be equal to 1.
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Tutor

It is by definition that any number to the power of 0 is 1. for example 5^3 / 5^2 = 5^3-2 = 5^1 =5 5^2/5^2 = 1 and also 5 ^2-2 = 5^0 hence 5^0 = 1. this is true for any real number.e.g 2^3/2^3 =1, a^b/a^b = 1 and so on
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We can write a*a*a...n times as = a^n without loss of generality, 1*a*a*a..n times = a^n if n is zero, it means that we aren't multiplying a even once. So, on LHS we have only1 and in RHS put n=0 1 = a^0
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2^3=2*2*2*1=8 2^2=2*2*1=4 2^1=2*1=2 2^0=1=1
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