Acube has a side of 5 cm. it has a mass of 250 grams. the density of the cube is

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?

Afair die is cast four times. calculate the probability of obtaining exactly two 6's round to the nearest tenth of a percent

The nth term of a sequence in 2n-1 the nth term of a different sequence is 3n+1 work out 3 numbers that are in bothe sequences and are between 20 and 40