for what value of n ,2^n ×5^n ends with 5?
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hey dude
here is your answer !
we have
2^n ×5^n
if n=1 then
2×5=10
if n=2 then
2^2×5^5 = (2×5)^2 = 10^2 =100 and so on.
thus for any value of n we get that 2^n ×5^n ends with 5.
I hope he'lp you
here is your answer !
we have
2^n ×5^n
if n=1 then
2×5=10
if n=2 then
2^2×5^5 = (2×5)^2 = 10^2 =100 and so on.
thus for any value of n we get that 2^n ×5^n ends with 5.
I hope he'lp you
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