First, we are introduced to the vault with its new patented door. Then, the description of how the vault works follow, with details about the steel bolts, handle, and time lock. Mr. Adams then explains the workings of the vault to Mr. Spencer, and Mr. Spencer shows polite interest in the explanation.
Geography books are never together.
From a group of 10 men and 7 women, in how many ways can 8 men and 4 women be selected?
Find the number of words formed by using all the letter of the word MEMBER, so that the vowels are always together.
...A man has 15 friends out of which 7 are his relatives. In how many ways can he invite his 9 friends in which at least 5 must be his relatives?
How many 8 digit numbers can be formed using the digits 1, 2, 0, 2, 4, 1, 2, 4 ?
In how many ways can the letters of the word ‘MEDICAL’ be rearranged so that the vowels never come together?
A team of 4 men and 2 women is to be selected out of 8 men and 4 women. If only one man and one woman remain in the team, then what will be the total nu...
In how ways can the selection be made so that a particular member is always included?
There are 8 men and 6 women in a party. If a group is formed with 4 members, then how many groups can be possible?
In how many different ways can the letter of the word ‘STRONG’ be arranged?