Question

Evaluate using suitable rearrangement:
125 X 625 X 8 X 16​

Answer 1

Answer:

125= 5^3, 625=5^4, 8=2^3, 16=2^4

=(5^3×5^4) ×(2^3×2^4)

= a^m×a^n=a^m+n

= 5^3+4×2^3+4

=5^7+2^7

=78125+128

=78253