BINARIES 1

If p*k = 4pk - p – 2k; find 3*2.

Solution

p*k = (4 x p x k) - p – (2xk)   [rewriting the given expression more clearly]

3*2 = (4 x 3 x 2) - 7 – (2x2)   [substituting 7 for p and 2 for k]

3*2 = 24 - 7 – 4

3*2 = 24 – 11   [since( -7-4) = -11]

3*2 = 13.

Hence   (3*2) = 13.

 TRY THIS........

If p*k = 5p + k – 5pk; find (-2*7).