2. Dani is organising a conference. The people attending will sit around
circular tables.
Each person needs a length of 75 centimetres
around the circumference of a table
Each table has a radius of 0.65 metres.
60 people are attending the conference.
How many tables are needed?

Weak battery is considered to be a part of routine a. inspection b. wear and tear c. maintenance d. check

How to use order of operation in 20 divide by 4 multiply 5 = 1

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?