Question
Which mineral is considered as a secondary mineral?
Solution
Gibbsite (Al ₂ O ₃ ·3H ₂ O) forms from weathering of primary minerals. Quartz and feldspar are primary.
A task force of 9 members is to be selected from a group of 8 male and 6 female officers. In how many ways can a task force be formed if it must contain...
Find the number of words that can be formed by using all letters of the word ' FRIDAY', if order of vowels remains same.
- A committee of 5 members is to be selected from 4 girls and 6 boys. Find the number of ways to form team such that the team consists of at most 2 girls.
Find the number of ways to arrange each letter of the word 'COMMITTEE' such that all the vowels always come together.
In how many ways can 4 boys and 3 girls can be seated in a row so that they are in alternate position.
A team of 4 members is to be formed from 5 girls and 4 boys. Find the number of ways to form team such that the team consists of at most 2 girls.
In a bag there are 4 red balls, 3 green balls, and 5 blue balls. If one ball is drawn at random from the bag, what is the probability of drawing a green...
Five different pens out of which 2 are red and the rest are blue are to be arranged in a line. Find the number of ways in which the two red pens are not...
How many numbers lie between 2000 and 3000 divisible by 5 can be made with the digits 2, 3, 4, 5, 6, 7 and 8 without repeating any digit?
11 people decided to spend an afternoon in two groups. A group of them decided to go to the theater and the remaining decided to play tennis. In how man...
Relevant for Exams:
