Question
Seven balls out of which 4 are red and the rest are green are to be arranged in a row. Find the number of arrangements in which all four red balls are not placed together.
More Permutation and combination Questions
- How many 7-letter arrangements of “TENSION” exist where the two N’s are not adjacent?
- A group consists of 9 boys and 8 girls. In how many ways can 3 boys and 5 girls be selected from the group?
- In how many different ways can the letter of the word ‘STRONG’ be arranged?
- Find total number of ways in which the word “TERRITORY” can be arranged.
- A committee of 6 members is to be formed from a group of 7 men and 5 women. In how many ways can the committee be formed such that it contains at least 4 m...
- A group consists of 11 boys and 9 girls. In how many ways can 7 boys and 5 girls be selected from the group?
- Simplify: 2(x+1) × 8(x−2) = 64. Find x.
- Find total number of ways in which the word “COMMISSION” can be arranged.
- 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 numbe...
- In how many different ways can the letters of the word “MONDAY” be arranged in such a way that the vowels always come together?
Hey! Ask a query
Please enter email id
The email must be a valid email address.
Please enter Mobile Number
Please enter valid Mobile Number
Please enter your Doubt
Think You're Ready for RBI Grade B?
RBI Grade B 2026 Phase 1 Memory Based Paper
- 200 Questions with Detailed Solutions
- Section-wise Coverage (GA, English, Quant & Reasoning)