Maths-
General
Easy
Question
The index of the highest power of 3 that divides 50! is -
- 16
- 16 !
- 22
- None of these
The correct answer is: 22
Related Questions to study
Physics-
A square coil of area is placed perpendicular to a uniform magnetic field of intensity . The magnetic flux through the coil is
A square coil of area is placed perpendicular to a uniform magnetic field of intensity . The magnetic flux through the coil is
Physics-General
Maths-
The number of proper divisors of 2p. 6q. 15r is-
The number of proper divisors of 2p. 6q. 15r is-
Maths-General
Maths-
In a polygon no three diagonals are concurrent. If the total number of points of intersection of diagonals interior to the polygon be 70 then the number of diagonals of the polygon is -
In a polygon no three diagonals are concurrent. If the total number of points of intersection of diagonals interior to the polygon be 70 then the number of diagonals of the polygon is -
Maths-General
Maths-
The number of triangles whose vertices are at the vertices of an octagon but none of sides happen to come from the sides of the octagon is-
The number of triangles whose vertices are at the vertices of an octagon but none of sides happen to come from the sides of the octagon is-Maths-General
Maths-General
Maths-
The number of different seven digit numbers that can be written using only the three digits 1, 2 and 3 with the condition that the digit 2 occurs twice in each number is-
The number of different seven digit numbers that can be written using only the three digits 1, 2 and 3 with the condition that the digit 2 occurs twice in each number is-
Maths-General
Maths-
In a football championship, 153 matches were played. Every team played one match with each other. The number of teams participating in the championship is-
In a football championship, 153 matches were played. Every team played one match with each other. The number of teams participating in the championship is-
Maths-General
Maths-
There are n straight lines in a plane, no two of which are parallel, and no three pass through the same point. Their points of intersection are joined. Then the number of fresh lines thus obtained is-
There are n straight lines in a plane, no two of which are parallel, and no three pass through the same point. Their points of intersection are joined. Then the number of fresh lines thus obtained is-
Maths-General
Maths-
A father with 7 children, takes 4 at a time to the zoo, as after as he can with out taking the same four children together more than once. How after will he go? How after will each child go?
A father with 7 children, takes 4 at a time to the zoo, as after as he can with out taking the same four children together more than once. How after will he go? How after will each child go?
Maths-General
Physics-
The number of turns in primary and secondary coils of a transformer are 100 and 20 respectively. If an alternating potential of is applied to the primary, the induced potential in secondary will be
The number of turns in primary and secondary coils of a transformer are 100 and 20 respectively. If an alternating potential of is applied to the primary, the induced potential in secondary will be
Physics-General
Maths-
There are 20 questions in a question paper. If no two students solve the same combination of questions but solve equal number of questions then the maximum number of students who appeared in the examination is-
There are 20 questions in a question paper. If no two students solve the same combination of questions but solve equal number of questions then the maximum number of students who appeared in the examination is-
Maths-General
Maths-
A candidates is required to answer 6 out of 10 questions which are divided into two groups each containing 5 question and he is not permitted to attempt more than 4 from each group. The number of ways he can make up this choice is-
A candidates is required to answer 6 out of 10 questions which are divided into two groups each containing 5 question and he is not permitted to attempt more than 4 from each group. The number of ways he can make up this choice is-
Maths-General
Physics-
An e.m.f. of is induced in a coil when the current in another nearby coil becomes from zero in . The coefficient of mutual induction between the two coils will be
An e.m.f. of is induced in a coil when the current in another nearby coil becomes from zero in . The coefficient of mutual induction between the two coils will be
Physics-General
Physics-
The number of turns of the primary and the secondary coils of a transformer are 10 and 100 respectively. The primary voltage and the current are given as and . Assuming the efficiency of the transformer as 90%, the secondary voltage and the current respectively are
The number of turns of the primary and the secondary coils of a transformer are 10 and 100 respectively. The primary voltage and the current are given as and . Assuming the efficiency of the transformer as 90%, the secondary voltage and the current respectively are
Physics-General
Physics-
In a primary coil current is flowing on 220 volts. In the secondary coil voltage produces. Then ratio of number of turns in secondary coil and primary coil will be
In a primary coil current is flowing on 220 volts. In the secondary coil voltage produces. Then ratio of number of turns in secondary coil and primary coil will be
Physics-General
Physics-
The ratio of secondary to the primary turns in a transformer is 3:2. If the power output be , then the input power neglecting all losses must be equal to
The ratio of secondary to the primary turns in a transformer is 3:2. If the power output be , then the input power neglecting all losses must be equal to
Physics-General