Four bad oranges are mixed accidently with 16 good oranges find the probaility distribution of the number of bad oranges in a draw of two oranges

Five defective bulbs are accidentally mixed with 20 good ones it is not possible to just look at a bulbs and tell whether or not it is defective find the probability distribution of the number of defective bulbs in a draw of 4 bulbs

In a retail market, fruit vendors were selling oranges kept in packing baskets. These contained varying number of oranges. The following was the distribution of oranges. Find the mean number of oranges kept in each basket. Which method of finding the mean did you choose ?

The owner of an orange orchard in Darjeeling plucked 1080 oranges. He got some baskets and tried to put as many number of oranges in each basket as there were baskets but fell short of 9 oranges. Let's calculate the number of baskets he had got.

In order to put some oranges into some boxes , Sankarbabu found that had he been put 20 oranges more into each box, the number of boxes required would be 3 less than the original number . Again , had he been put 5 orange less into each box, the number of boxes would be 1 more than the original number . Find the number of oranges and the number of boxes which Sankarbabu possessed.

Alkali metals on combustion in excess of air form different type of oxides depending on the size of metal cations e.g . lithium forms mainly the oxide Li_2O , sodium forms peroxide and some super oxides NaO_2 and potassium, Rubidium and caesium form the superoxides, MO_2 . The stability of peroxide and superoxide increases, as the size of the metal cation increases because of the stabilisation of larger anion by larger cations through lattice energy effect. These oxides are easily hydrolysed by water. The oxides and the peroxides are colourless when pure, but the superoxides are yellow or orange in colour. Peroxide and superoxide of sodium and potassium are widely used as oxidising agent and as air purifier in space capsules, submarines and breathing mask. When sodium reacts with excess of oxygen at 350^@ C , the oxidation number of oxygen per atom changes from:

A box of oranges is inspected by examining three randomly selected oranges drawn without replacement. If all the three oranges are good, the box is approved for sale, otherwise, it is rejected. Find the probability that a box containing 15 oranges out of which 12 are good and 3 are bad ones will be approved for sale.

There are few oranges in a basket After giving half of the oranges to my grandfather, 2 oranges are left. Let’s find, how many oranges were there in the basket

441 oranges were picked from Nisar's fruit garden. Oranges are to be kept in basket. Each basket will contain as many organes as there are number of baskets. Let's calculate to find numbers of basket.

Find the probability distribution of (i) number of heads in two tosses of a coin.  (ii) number of tails in the simultaneous tosses of three coins. (iii) number of heads in four tosses of a coin.