Advertisements
Advertisements
Question
If a letter is choosen randomly from all the letters of the word 'MAINTAINANCE', what is the probability that the choosen letter is a consonant
Solution
Total number of letters = 12
Let F represent the case where the chosen letter is a consonant.
Here, consonants are M, N, T, N, N, C.
∴ Number of consonants = 6
Thus, P(E) = `"Number of consonants"/"Total number of letters"`
= `6/12`
= `1/2`
APPEARS IN
RELATED QUESTIONS
Ramesh chooses a date at random in January for a party.
| January | |||||
| Mon | 6 | 13 | 20 | 27 | |
| Tue | 7 | 14 | 21 | 28 | |
| Wed | 1 | 8 | 15 | 22 | 29 |
| Thurs | 2 | 9 | 16 | 23 | 30 |
| Fri | 3 | 10 | 17 | 24 | 31 |
| Sat | 4 | 11 | 18 | 25 | |
| Sun | 5 | 12 | 19 | 26 | |
Find the probability that he chooses:
- a Wednesday
- a Friday
- a Tuesday or a Saturday.
A single letter is selected at random from the word ‘Probability’. Find the probability that it is a vowel.
There are 25 discs numbered 1 to 25. They are put in a closed box anx shaken thoroughly. A disc is drawn at random from the box.
Find the probability that the number on the disc is :
(i) an odd number
(ii) divisible by 2 and 3 both.
(iii) a number less than 16.
A box contains 5 red marbles, 8 white marbles and 4 grem marbles. One marble is taken out of the box at randam.
What is the probability that the marble taken out wil be
(ii) white?
1800 families with 2 children were selected randomly and the following data were recorded:
| No. of girls in a family | 2 | 1 | 0 |
| No. of families | 700 | 850 | 250 |
Computer the probability of a family chosen at random having: 2 girls
A card is drawn at random from a well-shuffled pack of 52 cards. Find the probability that at the card drawn is neither a red card nor a queen.
One card is randomly drawn from a pack of 52 cards. Find the probability that: the drawn card is an ace.
One card is randomly drawn from a pack of 52 cards. Find the probability that: the drawn card is red and a king.
One card is drawn from a pack of 52 cards, each of the 52 cards being equally likely to be drawn. Find the probability that the card is drawn is An ace.
One card is drawn from a pack of 52 cards, each of the 52 cards being equally likely to be drawn. Find the probability that the card is drawn is red.
One card is drawn from a pack of 52 cards, each of the 52 cards being equally likely to be drawn. Find the probability that the card is drawn is either red or king.
In a set of 25 cards, each card bears only one number from 1 to 25. One card is drawn randomly. Write the sample space for this random experiment
Write the event in the set form for the following random experiment. ‘If one die is thrown, the number obtained on the upper face is even.’
A box contains tokens numbered 5 to 16. A token is drawn at random. Find the probability that the token drawn bears a number divisible by:
- 5
- Neither by 2 nor by 3
Fill in the boxes:
Sunita choose a card from a well-shuffled deck of 52 cards.
Total number of cards, S = `square`
Let E be the event that the choosen card is a queen.
Number of queens = `square`
Thus, P(E) = `"Number of queens"/"Total number of cards" = square/square = square`
