Question
Read the directions carefully and answer the following
question. In a row of girls, Nikita is 16th from the front and in the same row Usha is 12th from the bottom. If they interchange their positions, then Nikita will be 25th from the front. How many girls are between them?Solution
Nikita’s position from the front = 16 Usha’s position from the bottom = 12 When they interchange their positions, then Nikita will be 25th from the front. Case – I, ←15→ Nikita Usha ←11 girls → Case –II, ←15 girls→ Usha → 8 girls ← Nikita ← 11 Girls→
How many unique arrangements can be made using all the letters of the word "DELUSION", ensuring that the vowels do not appear together?
How many 5-digit even numbers can be formed using the digits 0 to 9 if no digit is repeated?
Count the number of “words” from MISSISSIPPI when all the vowels occur together.
Find total number of ways in which the word “POSSESSION” can be arranged.
How many 6-digit numbers can be formed from the digits 0,3,4,5,6 and 8, in which the digits are not repeated?
- A group consists of 10 boys and 6 girls. In how many ways can 6 boys and 2 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?
You have 4 distinct cubes and 2 distinct balls. Find the number of ways to arrange them such that all 4 cubes are not placed together.
How many four-letter words without repetition having exactly two vowels can be formed by using the letters of the word "SEMINAR"?
- Six people out of which 3 are brothers and the rest are strangers are to be seated in a row. Find the number of ways in which all three brothers are not si...
