If the zero order reaction takes 100 min for 50% completion, how much time will it take for the 75% completion of the reaction?

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#Question id: 14499

#Section 1: Engineering Mathematics

Three machines A, B and C produce respectively 60%, 30% and 10% of the total number of items of a factory. The percentages of defective output of these machines are respectively 2%, 3% and 4%. An item is selected at random and found defective. Find the probability that the item was produced by machine C.

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#Question id: 14500

#Section 1: Engineering Mathematics

A fair die is tossed 180 times. The expected number of sixes is

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#Question id: 14501

#Section 1: Engineering Mathematics

In a population having 50% rice consumers, what is the probability that three or less out of 10 are rice consumers?

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#Question id: 14502

#Section 1: Engineering Mathematics

The chances of a person being alive who is now 35 years old, till he is 75 are 8 : 6 and of another person being alive now 40 years old till he is 80 are 4 : 5. The probability that at least one of these persons would die before completing 40 years hence is

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#Question id: 14503

#Section 1: Engineering Mathematics

If 10 coins are tossed 100 times, how many times would you expect 7 coins to fall head upward ?

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#Question id: 14504

#Section 1: Engineering Mathematics

If the probability of a defective bolt is 0.1, the mean and standard deviation for the distribution of defective bolts in a total of 500 are