E. coli grows from 0.10 to 0.50 kg dry cell m^-3 in 1 h. Evaluate the doubling time during the exponential growth phase 

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#Question id: 14690

#SCPH06 I Botany

One hundred identical coins each with probability p of showing up heads are tossed. If 0 < p < 1 and the probability of heads showing on 50 coins is equal to that of the heads showing in 51 coins, then the value of p is

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#Question id: 14691

#SCPH06 I Botany

In a shooting competition, the probability of hitting the target by A is 2/5, by B is 2/3 and by C is 3/5. If all of them fire independently at the same target, calculate the probability that only one of them will hit the target.

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#Question id: 14692

#SCPH06 I Botany

A box contains 6 white balls and 3 black balls and another box contains 4 white balls and 5 black balls. The probability that a ball selected from one of the box again selected at random is a white ball.

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#Question id: 14693

#SCPH06 I Botany

Two sisters A and B appeared for an Audition. The probability of selection of A is 1/5 and that of B is 2/7. The probability that both of them are selected is

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#Question id: 14694

#SCPH06 I Botany

Two balls are to be drawn from a bag containing 5 red and 7 white balls. Find the chance that they will both be white

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#Question id: 14695

#SCPH06 I Botany

From a bag containing 4 white and 5 black balls a man draws 3 at random. Then the probability that all 3 are black is