So,
First, we have to remember that 2^10 = 1024.
Using the exponent property of:
[tex]a^{bc}=(a^b)^c=2^{10*10}=(2^{10})^{10}=1024^{10}[/tex]
Same thing with the second question. 2^4 = 16.
[tex]a^{bc}=(a^b)^c=2^{4*25}=(2^4)^{25}=16^{25}[/tex]
Hope this helps!