Draw a tree diagram for three fair coins tossed together once. a) Derive the sample space.
b) Find the probability of getting:
i) at least one head
ii) at most one tail
iii) exactly three heads.

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

Jacks bank statement shows an account balance of -$25.50. which describes the magnitude, of size, of the debt in dollars

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.