What is the second last digit of $2564^{345}$ ?

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Solution

The correct option is A 2
Option (a)

$64^{345} = 2^{2070} = (2^{10})^{207}$

this is $(2^{10})^{o d d p o w e r}$ . It will end with 24. The second last digit is 2. option (a)

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What is the second last digit of 2564345 ?

The correct option is A 2Option (a) 64345=22070=(210)207 this is (210)odd power. It will end with 24. The second last digit is 2. option (a)

What is the second last digit of $2564^{345}$ ?

The correct option is A 2
Option (a)

$64^{345} = 2^{2070} = (2^{10})^{207}$

this is $(2^{10})^{o d d p o w e r}$ . It will end with 24. The second last digit is 2. option (a)