Question
Which one is absent in free state during origin of life ?
The correct answer is:
Related Questions to study
Two different packs of 52 cards are shuffled together. The number of ways in which a man can be dealt 26 cards so that he does not get two cards of the same suit and same denomination is-
Two different packs of 52 cards are shuffled together. The number of ways in which a man can be dealt 26 cards so that he does not get two cards of the same suit and same denomination is-
In how many ways can 6 prizes be distributed equally among 3 persons?
In combinatorics, the rule of sum or addition principle states that it is the idea that if the complete A ways of doing something and B ways of doing something and B ways of doing something, we cannot do at the same time, then there are (A + B) ways of choosing one of the actions. In this question, there is a possibility that the student might miss considering all the cases. They may forget to consider case 2 and get a different answer.
In how many ways can 6 prizes be distributed equally among 3 persons?
In combinatorics, the rule of sum or addition principle states that it is the idea that if the complete A ways of doing something and B ways of doing something and B ways of doing something, we cannot do at the same time, then there are (A + B) ways of choosing one of the actions. In this question, there is a possibility that the student might miss considering all the cases. They may forget to consider case 2 and get a different answer.
The number of ways in which mn students can be distributed equally among m sections is-
While solving this question, the possible mistake one can make is by always choosing n students for all sections from mn students which is totally wrong because at a time one student can only be in 1 section. So, if n students are selected for 1 section then in the second section, we will choose from (mn – n).
The number of ways in which mn students can be distributed equally among m sections is-
While solving this question, the possible mistake one can make is by always choosing n students for all sections from mn students which is totally wrong because at a time one student can only be in 1 section. So, if n students are selected for 1 section then in the second section, we will choose from (mn – n).
The number of ways in which 20 volunteers can be divided into groups of 4, 7 and 9 persons is-
The number of ways in which 20 volunteers can be divided into groups of 4, 7 and 9 persons is-
The number of ways to make 5 heaps of 3books each from 15 different books is-
In these type of questions, it is to be always remembered that separate approaches need to be adopted for distinct and identical objects. Here, the books were distinct or different.
The number of ways to make 5 heaps of 3books each from 15 different books is-
In these type of questions, it is to be always remembered that separate approaches need to be adopted for distinct and identical objects. Here, the books were distinct or different.
The line among the following that touches the 
is
The line among the following that touches the is
The number of necklaces which can be formed by selecting 4 beads out of 6 beads of different coloured glasses and 4 beads out of 5 beads of different metal, is-
The number of necklaces which can be formed by selecting 4 beads out of 6 beads of different coloured glasses and 4 beads out of 5 beads of different metal, is-
The number of ways in which 20 persons can sit on 8 chairs round a circular table is-
The number of ways in which 20 persons can sit on 8 chairs round a circular table is-
The number of numbers can be formed by taking any 2 digits from digits 6,7,8,9 and 3 digits from 1, 2, 3, 4, 5 is -
The number of numbers can be formed by taking any 2 digits from digits 6,7,8,9 and 3 digits from 1, 2, 3, 4, 5 is -
How many numbers consisting of 5 digits can be formed in which the digits 3,4 and 7 are used only once and the digit 5 is used twice-
How many numbers consisting of 5 digits can be formed in which the digits 3,4 and 7 are used only once and the digit 5 is used twice-
The number of ways of distributing n prizes among n boys when any of the student does not get all the prizes is-
The number of ways of distributing n prizes among n boys when any of the student does not get all the prizes is-
If the line 
is a tangent to the parabola 
then k=
If the line is a tangent to the parabola then k=
The number of ways in which n prizes can be distributed among n students when each student is eligible to get any number of prizes is-
The number of ways in which n prizes can be distributed among n students when each student is eligible to get any number of prizes is-
In how many ways can six different rings be wear in four fingers?
It is important to note that we have used a basic fundamental principle of counting to find the total ways. Also, it is important to notice that each ring has 4 ways as it has not been given that each finger must have at least one ring. So, there can be 6 rings in a finger alone and remaining all the fingers empty.
In how many ways can six different rings be wear in four fingers?
It is important to note that we have used a basic fundamental principle of counting to find the total ways. Also, it is important to notice that each ring has 4 ways as it has not been given that each finger must have at least one ring. So, there can be 6 rings in a finger alone and remaining all the fingers empty.
