EXERCISE 7.1

Author:Jharkhand Board

Jharkhand Board Mathematics Solutions for EXERCISE 7.1

Simple step-by-step solutions to EXERCISE 7.1 questions of Permutations and Combinations from MATHEMATICS Textbook for Class XI. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.

Questions from EXERCISE 7.1 with Hints & Solutions

EASY
1th Jharkhand Board
IMPORTANT

 How many 3-digit numbers can be formed from the digits 1,2,3,4 and 5 assuming that repetition of the digits is allowed?

EASY
1th Jharkhand Board
IMPORTANT

How many 3-digit numbers can be formed from the digits 1,2,3,4 and 5 assuming that repetition of the digits is not allowed?

EASY
1th Jharkhand Board
IMPORTANT

How many 3-digit even numbers can be formed from the digits 1,2,3,4,5,6 if the digits can be repeated?

MEDIUM
1th Jharkhand Board
IMPORTANT

How many 4-letter codes can be formed using the first 10 letters of the English alphabet, if no letter can be repeated?

MEDIUM
1th Jharkhand Board
IMPORTANT

How many 5-digit telephone numbers can be constructed using the digits 0 to 9 if each number starts with 67 and no digit appears more than once?

MEDIUM
1th Jharkhand Board
IMPORTANT

A coin is tossed 3 times and the outcomes are recorded. How many possible outcomes are there?

EASY
1th Jharkhand Board
IMPORTANT

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?