Maths-

#### How many signals can be given by means of 10 different flags when at a time 4 flags are used, one above the other?

Maths-General

^{10}C_{4}
- 4
^{10}P_{4}
- 40

^{10}C_{4}^{10}P_{4}#### Answer:The correct answer is: ^{10}P_{4}

## Book A Free Demo

+91

Grade

Select Grade

### Related Questions to study

maths-

#### The number of ways in which three persons can dress themselves when they have 4 shirts. 5 pants and 6 hats between them, is-

#### The number of ways in which three persons can dress themselves when they have 4 shirts. 5 pants and 6 hats between them, is-

maths-General

maths-

#### Eleven animals of a circus have to be placed in eleven cages, one in each cage. If four of the cages are too small for six of the animals, the number of ways of caging the animals is-

#### Eleven animals of a circus have to be placed in eleven cages, one in each cage. If four of the cages are too small for six of the animals, the number of ways of caging the animals is-

maths-General

maths-

#### In how many ways can six different rings be wear in four fingers?

#### In how many ways can six different rings be wear in four fingers?

maths-General

maths-

#### 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-

maths-General

maths-

#### Eight chairs are numbered from 1 to 8. Two women and three men wish to occupy one chair each. First women choose the chairs from amongst the chairs marked 1 to 4; and then the men select the chairs from the remaining. The number of possible arrangements is-

#### Eight chairs are numbered from 1 to 8. Two women and three men wish to occupy one chair each. First women choose the chairs from amongst the chairs marked 1 to 4; and then the men select the chairs from the remaining. The number of possible arrangements is-

maths-General

maths-

#### A tea party is arranged of 16 persons along two sides of a long table with 8 chairs on each side. 4 men wish to sit on one particular side and 2 on the other side. In how many ways can they be seated ?</span

#### A tea party is arranged of 16 persons along two sides of a long table with 8 chairs on each side. 4 men wish to sit on one particular side and 2 on the other side. In how many ways can they be seated ?</span

maths-General

maths-

#### If ^{(m+n) }P_{2} = 56 and ^{m–n}P_{2} = 12 then (m, n) equals-

#### If ^{(m+n) }P_{2} = 56 and ^{m–n}P_{2} = 12 then (m, n) equals-

maths-General

maths-

#### If the line is a tangent to the parabola then k=

#### If the line is a tangent to the parabola then k=

maths-General

maths-

#### 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-

maths-General

physics-

#### A thin uniform annular disc (see figure) of mass has outer radius and inner radius . The work required to take a unit mass from point on its axis to infinity is

Potential at point will be obtained by in integration as given below. Let be the mass of small rings as shown

#### A thin uniform annular disc (see figure) of mass has outer radius and inner radius . The work required to take a unit mass from point on its axis to infinity is

physics-General

Potential at point will be obtained by in integration as given below. Let be the mass of small rings as shown

maths-

#### 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-

maths-General

maths-

#### 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 -

maths-General

maths-

#### 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-

maths-General

maths-

#### 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-

maths-General

maths-

#### The line among the following that touches the is

#### The line among the following that touches the is

maths-General