exam Maths Puzzle Numerical Ability

A coin is tossed 9 times. What is the probability that the coin will land heads at least 7 times?

Read Solution (Total 0)

exam Other Question

x varies directly as y and inversely as the square of z. If x=10 when y=8 and z=2, find x when y=12 and z=3. Could use some help with this problem. I have to simplify 1/x^2-36/1+6/x-6