The number (10^2 - 8^2)(9^2 – 7^2) x...x (4^2 - 2^2)(3^2 – 1^2)
can be written in the form k x 2^n, where k and n are
positive integers and k is odd. What are the values
of k and n?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

Find the missing variable for a parallelogram: a = latex: 32in^2 32 i n 2 h = b = 6.3 in (1in=2.54cm)

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?