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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

In a Single Throw of a Dice, Find the Probability of Getting a Number 4 - Mathematics

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प्रश्न

In a single throw of a dice, find the probability of getting a number 4

योग
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उत्तर

Even of getting number 4 = 1

∵ Total number of outcome = 6

∴ Probability =`1/6`

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Concept for Feel of Probability Using Data Through Experiments.
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अध्याय 22: Probability - Exercise 22 (A)

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सेलिना Concise Mathematics [English] Class 7 ICSE
अध्याय 22 Probability
Exercise 22 (A) | Q 9.1

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  head


A dice is thrown 20 times and the outcomes are noted as shown below:

Outcomes 1 2 3 4 5 6
No. of times 2 3 4 4 3 4

Now a dice is thrown at random, find the probability of getting:


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.


A bag contains 4 white and 6 black balls,- all of the same shape and same size. A ball is drawn from the bag without looking into the bag. Find the probability that the ball drawn is:
(i) a black ball
(ii) a white ball
(iii) not a black ball


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 40


Five Students A, B, C, D, and E are competing in a long-distance race. Each student’s probability of winning the race is given below:
A → 20%, B → 22%, C → 7%, D → 15% and E → 36%
(i) Who is most likely to win the race?
(ii) Who is least likely to win the race?
(iii) Find the sum of probabilities given.
(iv) Find the probability that either A or D will win the race.
(v) Let S be the event that B will win the race.
(a) Find P(S)
(b) State, in words, the complementary event S’.
(c) Find P(S’)


Ten cards with numbers 1 to 10 written on them are placed in a bag. A card is chosen from the bag at random. Determine the probability of choosing:
(i) 7
(ii) 9 or 10
(iii) a number greater than 4
(iv) a number less than 6


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?

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