Maths-
General
Easy
Question
Number of ways of selecting 3 consecutive objects out of 15 objects (distinct) placed around a circle is
-
-
- 13
- 15
The correct answer is: 15
The possible 3 objects which are consecutive
are (1, 2, 3); (2, 3, 4); (3, 4, 5);(15, 1, 2)
They are 15 in number
Related Questions to study
Maths-
If , then
If , then
Maths-General
Maths-
Maths-General
Maths-
The number of ways in which 6 gentlemen and 3 ladies be seated round a table so that every gentleman may have a lady by his side is
The number of ways in which 6 gentlemen and 3 ladies be seated round a table so that every gentleman may have a lady by his side is
Maths-General
Maths-
If
then the values of a and b are
If
then the values of a and b are
Maths-General
Maths-
A circle having radius 7 touches both the axes and lies in 1st quadrant. If the circle is rolled along the positive x-axis and completes on rotation. Then equation of circle in final position is
A circle having radius 7 touches both the axes and lies in 1st quadrant. If the circle is rolled along the positive x-axis and completes on rotation. Then equation of circle in final position is
Maths-General
Maths-
If
For such questions, we should know different formulas.
If
Maths-General
For such questions, we should know different formulas.
Maths-
Let α and β be the distinct roots of
Let α and β be the distinct roots of
Maths-General
Maths-
Maths-General
Maths-
Maths-General
Maths-
Maths-General
Maths-
For such questions, we should know the different formulas of limits.
Maths-General
For such questions, we should know the different formulas of limits.
Maths-
For such questions, we should know different formulae of limit.
Maths-General
For such questions, we should know different formulae of limit.
Maths-
The number of n-digit numbers,no two consecutive digits being the same is
The number of n-digit numbers,no two consecutive digits being the same is
Maths-General
Maths-
A reserve of 12 railway station masters is to be divided into two groups of 6 each one for day duty and the other for night duty. The number of ways in which this can be done if two specified persons A,B should not be included in the same group is
A reserve of 12 railway station masters is to be divided into two groups of 6 each one for day duty and the other for night duty. The number of ways in which this can be done if two specified persons A,B should not be included in the same group is
Maths-General
Maths-
For such questions, we should know different rules and formulae of limits.
Maths-General
For such questions, we should know different rules and formulae of limits.