Nickel is absorbed by plants as nickel ions (Ni2+)
There are 5 Red caps, 3 Green caps and 2 Blue caps in a box. 4 caps are chosen at random. What is the probability of their being 2 Red and 2 Blue caps?
If A and B are any two events such that P (A) + P (B) − P (A ∩ B) = P (A), then
If A and B are events such that P(A|B) = P(B|A), then which of the following is true
One bag contains 5 yellow hats and 4pink hats. Another bag contains 3 yellow hats and 7pink hats. If one hat is drawn from each bag, what is the probabi...
In a lottery, there are 12 prizes and 16 blanks. A lottery is drawn at random. What is the probability of getting a prize?
Integers 11, 12, 13, 14 are written on 4 cards they are well shuffled. Two cards are taken at random without replacement. What is the probability that t...
The probability of selecting a rotten apple randomly from a heap of 1050 apples is 0.36. What is the number of rotten apples in the heap?
A word consists of 9 letters 5 consonants and 4 vowels. Three letters are chosen at random. What is the probability that more than one vowel will be sel...
A bag contains cards numbered between 23 and 92. If one card is drawn from the bag, the probability that the number on the drawn card is a perfect squar...
The probability of selecting a rotten apple randomly from a heap of 600 apples is 0.14. What is the number of rotten apples in the heap?
