Home
Class 12
MATHS
If five coins are flipped and all the di...

If five coins are flipped and all the different ways they could fall are listed, how many elements of this list will contain more than 3 heads?

A

5

B

6

C

10

D

16

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem of finding how many ways five coins can be flipped to show more than three heads, we will consider the cases of getting exactly four heads and exactly five heads. ### Step-by-Step Solution: 1. **Identify the Total Number of Coins**: We have a total of 5 coins. 2. **Define the Cases for More Than 3 Heads**: - More than 3 heads means we can have either 4 heads or 5 heads. 3. **Calculate the Number of Ways to Get 4 Heads**: - The number of ways to choose 4 heads from 5 coins can be calculated using the combination formula \( \binom{n}{r} \), where \( n \) is the total number of items (coins) and \( r \) is the number of items to choose (heads). - Here, \( n = 5 \) and \( r = 4 \). - The formula for combinations is: \[ \binom{n}{r} = \frac{n!}{r!(n-r)!} \] - Applying the values: \[ \binom{5}{4} = \frac{5!}{4!(5-4)!} = \frac{5!}{4! \cdot 1!} = \frac{5 \times 4!}{4! \cdot 1} = 5 \] 4. **Calculate the Number of Ways to Get 5 Heads**: - The number of ways to choose 5 heads from 5 coins is: - Here, \( n = 5 \) and \( r = 5 \). - Applying the combination formula: \[ \binom{5}{5} = \frac{5!}{5!(5-5)!} = \frac{5!}{5! \cdot 0!} = \frac{5!}{5! \cdot 1} = 1 \] 5. **Sum the Results**: - Now, we add the number of ways to get 4 heads and 5 heads: \[ \text{Total} = \binom{5}{4} + \binom{5}{5} = 5 + 1 = 6 \] 6. **Conclusion**: - Therefore, the total number of ways to flip 5 coins such that there are more than 3 heads is **6**.

To solve the problem of finding how many ways five coins can be flipped to show more than three heads, we will consider the cases of getting exactly four heads and exactly five heads. ### Step-by-Step Solution: 1. **Identify the Total Number of Coins**: We have a total of 5 coins. 2. **Define the Cases for More Than 3 Heads**: ...
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

The number of all subsets of a set containing 2n+1 elements which contains more than n elements is

If 10 coins are to be flipped and the first 5 all come up heads, what is the probability that exactly 3 more heads will be flipped?

Five balls of different color are to be placed in three boxes of different size. Each box can hold all five. In how many different ways can we place the balls so that no box remains empty?

A coin is tossed 6. times In how many different ways can we obtain 4 heads and 2 tails?

If the different permutations of all the letter of the word EXAMINATION are listed as in a dictionary, how many words are there in this list before the first word starting with E?

In how many ways can 2t+1 identical balls be placed in three distinct boxes so that any two boxes together will contain more balls than the third?

In how many ways can 2t+1 identical balls be placed in three distinct boxes so that any two boxes together will contain more balls than the third?

If A=[1,2,3,4,5,6] then how many subsets of A contain the element 2, 3 and 5?

In how many ways can 3 people be seated in a row containing 7 seats?

If the different permutations of all the letter of the word EXAMINATION are listed as in a dictionary; how many words are there in this list before the first word starting with E?

ENGLISH SAT-MODEL TEST 3-MCQ
  1. A positive rational root of the equation 4x^3-x^216x-4=0 is

    Text Solution

    |

  2. The norm of vector vecV=3veci-sqrt2vecj is

    Text Solution

    |

  3. If five coins are flipped and all the different ways they could fall a...

    Text Solution

    |

  4. The seventh term of an arithmetic sequence is 5 and the twelfth term -...

    Text Solution

    |

  5. The graph of the curve represented by {x=sectheta, y=costheta} is

    Text Solution

    |

  6. Point (3,2) lies on the graph of the inverse of f(x)=2x^3+x+A. The val...

    Text Solution

    |

  7. If f(x) =ax^2+bx+c and f(1)=3 and f(-1)=3, then a+c equals

    Text Solution

    |

  8. In /\ABC,angleB=42^(@),angleC=30^(@) , and AB=100. The length of BC is

    Text Solution

    |

  9. If 4 sinx+3=0 on 0lexlt2pi, Then x=

    Text Solution

    |

  10. What is the sum of the infinite geomatric series 6+4+8/3+(16)/9+….?

    Text Solution

    |

  11. In a+bi form, the reciprocal of 2+6i is

    Text Solution

    |

  12. A central anglej of two concentric circles is (3pi)/(14). The area of ...

    Text Solution

    |

  13. If the region bounded by the lines y=-4/3x+4 , x=0 , and y=0 is rotate...

    Text Solution

    |

  14. If there are known to be 4 broken transistors in a box of 12, and 3 tr...

    Text Solution

    |

  15. What is the domain of f(x)=3sqrt(15-x^2)?

    Text Solution

    |

  16. Which of the following is horizontal asymptote to the function f(x)=(3...

    Text Solution

    |

  17. When a certain radioactive elements decays, the amount at any time t c...

    Text Solution

    |

  18. If n is an integer, what is the remainder when 3x^(2n+3)-4x^(2n+2)+5x^...

    Text Solution

    |

  19. Four men A,B,C and D, line up in a row. What is the probability that m...

    Text Solution

    |

  20. overset(10)underset(i=3)sum5

    Text Solution

    |