Home
Class 12
MATHS
There are unlimited number of identical ...

There are unlimited number of identical balls of three different colours. How many arrangements of atmost 7 balls in a row can be made by using them?

A

2187

B

343

C

399

D

3279

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

The total number of ways in which 5 balls of differert colours can be distributed among 3 persons so thai each person gets at least one ball is

How many 3-digit even numbers that can be formed using the digit 2,4,6,8 ?

How many solid spherical balls of radius 2cm can be made by melting a solid sphere of 8cm?

You have a jar with five identical balls of different colours (White, Red, Blue, Grey and Yellow) and you have to pickup (draw) a ball without looking at it. List the possible outcomes you get.

Given 4 flags of different colours, how many different signals can be generated, if a signal requires the use of 2 flags one below the other?

How many necklace of 12 beads, each can be made from 18 beads of various colours?

Given 5 flags of different colours, how many different signals can be generated if each signal requires the use of 2 flags, one below the other ?

A curved surface is shown figure . The portion BCD is free of friction .There are three spherical balls of identical radii and masses . Balls are released from at rest one by one from A which is at a slighly greater height than C . with the surface Ab , ball 1 has large eneough friction to cause rolling down without slipping , ball 2 has a small friction and ball 3 has a negligible friction . (a) For which balls is total mechanical energy conserved ? (b) Which ball (s) can reach D ? (c ) For ball which do not reach D, which of the balls can reach back A ?

In how many ways 5 different balls can be arranged into 3 different boxes so that no box remains empty?

If a spherical steel ball is melted to make 8 new identical balls then the radius of new ball is how many times the radius of the original ball?