हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

A Coin is Tossed 80 Times and the Head is Obtained 38 Times. Now, If a Coin Tossed Once, What Will the Probability of Getting a Head - Mathematics

Advertisements
Advertisements

प्रश्न

A coin is tossed 80 times and the head is obtained 38 times. Now, if a coin tossed once, what will the probability of getting a  head

योग
Advertisements

उत्तर

∵ Total number of possible outcomes = 80
and, the number of favourable outcomes of getting head = 38

∴ Probability of getting a head =`"Number of favourable outcomes"/"Total number of outcomes"`

= `38/80=19/40`

shaalaa.com
Concept for Feel of Probability Using Data Through Experiments.
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 22: Probability - Exercise 22 (A)

APPEARS IN

सेलिना Concise Mathematics [English] Class 7 ICSE
अध्याय 22 Probability
Exercise 22 (A) | Q 2.2

संबंधित प्रश्न

A coin is tossed 80 times and the head is obtained 38 times. Now, if a coin tossed once, what will the probability of getting a tail


A survey of 50 boys showed that 21 like tea while 29 dislike it. Out of these boys, one boy is chosen at random. What is the probability that the chosen boy
(i) likes tea
(ii) dislikes tea


Two coins are tossed simultaneously 100 times and the outcomes are as given below:

Outcomes Two heads
(H, H)
Exactly one head
(H T or T H)
No head
(T T)
No. of times 21 55 24

If the same pair of coins is tossed again at random, find the probability of getting:
(i) two heads
(ii) exactly one head
(iii) no head.


In a single throw of a dice, find the probability of getting a number 6


Hundred identical cards are numbered from 1 to 100. The cards are well shuffled and then a card is drawn. Find the probability that the number on the card drawn is 80


Hundred identical cards are numbered from 1 to 100. The cards are well shuffled and then a card is drawn. Find the probability that the number on the card drawn is 40


A Ticket is randomly selected from a basket containing 3 green, 4 yellow, and 5 blue tickets. Determine the probability of getting:
(i) a green ticket
(ii) a green or yellow ticket.
(iii) an orange ticket.


A carton contains eight brown and four white eggs. Find the probability that an egg selected at random is:
(i) brown
(ii) white


A box contains 3 yellow, 4 green, and 8 blue tickets. A ticket is chosen at random. Find the probability that the ticket is:
(i) yellow
(ii) green
(iii) blue
(iv) red
(v) not yellow


The following table shows number of males and number of females of a small locality in different age groups.

Age in years 10-20 21-50 Above 50
Male 8 12 6
female 6 10 4

If one of the persons, from this locality, is picked at random, what is the probability that

  1. the person picked is a male?
  2. the person picked is a female?
  3. the person picked is a female aged 21-50?
  4. the person is a male with age up to 50 years?

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×