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Biological coin এর বাংলা কী?

সঠিক উত্তর:

Consider the following statements.
1. If a person looks at a coin which is in a bucket of water, the coin will appear to be closer than it really is.
2. If a person under water looks at a coin above the water surface, the coin will appear to be at a higher level than it really is.
Which of the above statements is/are correct?

The probability is 1/2 that a coin will turn up heads on any toss. If the coin is to be tossed three times, what is the probability that on at least one of the tosses the coin will turn up tails?

A fair coin is thrown in the air four times. If the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss ?

A coin is tossed twice if the coin shows head it is tossed again but if it shows a tail then a die is tossed. If 8 possible outcomes are equally likely. Find the probability that the die shows a number greater than 4, if it is known that the first throw of the coin results in a tail

X finds a rupee coin on the highway, not knowing to whom the coin belongs, X picks the coin and pockets it. What offence, it any, has been committed by X. He is guilty of

For each element in a set of size 2n, an unbiased coin is tossed. All the 2n coin tossed are independent. An element is chosen if the corresponding coin toss were head. The probability that exactly n elements are chosen is

An automatic box was the property of the company. The box contained a slit of sufficient size to admit a coin and a projecting button. The box was so constructed that upon a coin being dropped into the slit and the button being pushed in, a chocolate would be ejected from the box. 'A' dropped into the slit a brass disc about the size and shape of the coin, and thereby obtained a chocolate. 'A' is

When tossed, a certain coin has equal probability of landing on either side. If the coin is tossed 3 times, what is the probability that it will land on the same side each time?

A fair coin is flipped three times. What is the probality that coin lands head each time?

In a rare coin collection, all coins are either pure gold or pure silver , and there is initially one gold coin for every three silver coins . With the addition of 10 more gold coins to the collection, the ratio of gold coins to silver coins is 1 to 2. Based on this information , how many total coins are there now in this collection (after the acquisition)?