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In how many ways can the following prizes be given away to a class of 30 students, first and second in Mathematics, first and second in Physics, first in Chemistry and first in English?
1.) First and second in Mathematics:
There are 30 students eligible for the first prize and 29 students remaining for the second prize.
So, total number of ways of distributing the prize = $$30\times\ 29$$
2.) First and second in Physics:
There are 30 students eligible for the first prize and 29 students remaining for the second prize.
So, total number of ways of distributing the prize = $$30\times\ 29$$
3.) First in Chemistry:
There are 30 students eligible for the first prize.
So, total number of ways of distributing the prize = 30
4.) First in English:
There are 30 students eligible for the first prize.
So, total number of ways of distributing the prize = 30
So, total number of ways of giving all the prizes = $$\left(30\times\ 29\right)\times\ \left(30\times\ 29\right)\times\ 30\times\ 30=30^4\times\ 29^2$$.
So, correct answer is option D.
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