Home
Class 10
MATHS
A boy spends Rs. 10 on first day, Rs. 20...

A boy spends Rs. 10 on first day, Rs. 20 on second day, Rs. 40 on third day and so on. Find how much, in all, will he spend in 12 days ?

Text Solution

Verified by Experts

The correct Answer is:
Rs. `10(2^(12)-1)`
Promotional Banner

Topper's Solved these Questions

  • GEOMETRIC PROGRESSION

    ICSE|Exercise Exercise 11(C) |10 Videos

  • FACTORISATION

    ICSE|Exercise M.C.Q(Competency Based Questions )|15 Videos

  • GOODS AND SERVICE TEX (GST)

    ICSE|Exercise Competency Based Questions |20 Videos

Similar Questions

Explore conceptually related problems

Daya gets pocket money from his father every day. Out of the pocket money, he saves Rs 2.75 on first day, Rs 3.00 on second day, Rs 3.25 on third day and so on. Find: the total amount saved by him in 30 days.

Daya gets pocket money from his father every day. Out of the pocket money, he saves Rs 2.75 on first day, Rs 3.00 on second day, Rs 3.25 on third day and so on. Find: the amount saved by Daya on 14^(th) day

Daya gets pocket money from his father every day. Out of the pocket money, he saves Rs 2.75 on first day, Rs 3.00 on second day, Rs 3.25 on third day and so on. Find: the amount saved by Daya on 30^(th) day

Ekta earns Rs 1500 in 10 days. How much will she earn in 30 days?

15 boys earn Rs 900 in 5 days, how much will 20 boys earn in 7 days?

A contract on construction job specifies a penalty for delay of completion beyond a certain date as follows: Rs 200 for the first day, Rs 250 for the second day Rs 300 for the third day, etc., the penalty for each succeeding day being Rs 50 more than for the preceding day. How much money the contractor has to pay as penalty, if he has delayed the work by 30 days?

A contract on construction job specifies a penalty for delay of completion beyond a certain date as follows: Rs 200 for the first day, Rs 250 for the second day Rs 300 for the third day, etc., the penalty for each succeeding day being Rs 50 more than for the preceding day. How much money the contractor has to pay as penalty, if he has delayed the work by 30 days?

4 men or 6 women earn Rs. 360 in one days. Find, how much will : A man earn in one day ?

4 men or 6 women earn Rs. 360 in one days. Find, how much will : A woman earn in one day ?

If 25 men earn Rs 1000 in 10 days, how much will 15 men earn in 15 days?

ICSE-GEOMETRIC PROGRESSION -Exercise 11(D)
  1. How many terms of the geometric progression 1+4+16+64+ . . . . .. . . ...

    Text Solution

    |

  2. If the first term of a G.P is 27 and 8th term is 1/81, then the sum of...

    Text Solution

    |

  3. A boy spends Rs. 10 on first day, Rs. 20 on second day, Rs. 40 on thir...

    Text Solution

    |

  4. The 4^(th) and the 7^(th) terms of a G.P. are (1)/(27) and (1)/(729) r...

    Text Solution

    |

  5. A geometric progression has common ratio = 3 and last term = 486. If t...

    Text Solution

    |

  6. Find the sum of G.P. : 3,6,12, . . . . . . . . ., 1536.

    Text Solution

    |

  7. How many terms of the series 2+6+18+ . . . . . . . . . . . Must be tak...

    Text Solution

    |

  8. In a G.P., the ratio between the sum of first three terms and that of ...

    Text Solution

    |

  9. How many terms of the G.P. (2)/(9),-(1)/(3),(1)/(2), . . . . . . . ....

    Text Solution

    |

  10. If the sum of 1+2+2^(2)+ . . . . . . . . . .+2^(n-1) is 255, find the ...

    Text Solution

    |

  11. Find the geometric mean between : (4)/(9) and (9)/(4)

    Text Solution

    |

  12. Find the geometric mean between : 14 and (7)/(32)

    Text Solution

    |

  13. Find the geometric mean between : 2a and 8a^(3)

    Text Solution

    |

  14. The sum of three numbers in G.P. is (39)/(10) and their product is 1. ...

    Text Solution

    |

  15. The first term of a G.P. is -3 and the square of the second term is eq...

    Text Solution

    |

  16. Find the 5^(th) term of the G.P. (5)/(2),1. . . . . . . . .

    Text Solution

    |

  17. The first two terms of a G.P. are 125 and 25 respectively. Find the 5^...

    Text Solution

    |

  18. Find the sum of the sequence -(1)/(3),1,-3,9, . . . . . . . Upto 8 te...

    Text Solution

    |

  19. The first term of a G.P. in 27. If the 8^(th) term be (1)/(81), what w...

    Text Solution

    |

  20. Find a G.P. for which the sum of first two terms is -4 and the fifth i...

    Text Solution

    |