Question
Which type of encryption uses the same key for both
encryption and decryption?Solution
Symmetric encryption uses the same key for both encryption and decryption of data.
Find the number of ways to arrange each letter of the word 'EDUCATIONAL' such that all the vowels always come together.
A group consists of 6 boys and 8 girls. In how many ways can 2 boys and 3 girls be selected from the group?
A group consists of 10 boys and 10 girls. In how many ways can 6 boys and 4 girls be selected from the group?
8 students appear in an examination. In how many ways can the result be announced?
In a group of 9 boys and 6 girls, 5 students have to be selected. In how many ways it can be done so that only 2 boys are included.
In how many ways Barcelona’s football team captain and vice-captain be elected from a team of 15 men?
From 6 officers and 8 Jawans, in how many ways can 5 be chosen to include exactly 3 officers?
Find total number of ways in which the word “ACCOMMODATE” can be arranged.
A person has 12 friends out of which 7 are relatives. In how many ways can he invite 6 friends such that at least 4 of them are relatives?
In how many different ways can the letters of the word QUANTITY be arranged so that the vowels always come together?
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