Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

ICSE Class 10 Answered

A box contains a ceretain number of balls. Some of these balls are makred A.  Some are makred B and the remainings are marked C   When a ball is drawn at random from the box  P(A)  = 1/3 and P (B) = 1/4 . If there are 40 balls lin the box which are marked as C, find the number of balls in the box   regards rs  
Asked by s.priyamvathaiyer | 24 Apr, 2019, 12:50: PM
answered-by-expert Expert Answer

P(A) = 1/3 and P(B) = 1/4 

So, P(C) = 1 - (1/3 + 1/4) = 5/12

Now 5/12 = 40/n (Where n is the total number of balls in the box)

or n = (40*12)/5 = 96.

 

Answered by Arun | 24 Apr, 2019, 06:31: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
ICSE 10 - Maths
From a pack of playing cards, all cards whose numbers are multiples of 3 are removed. A card is now drawn at random. What is the probability that the card drawn is (ii) an even numbered red card.
Asked by sohasurani78 | 04 Jun, 2022, 12:56: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
natural numbers from 1 to 10 are written on paper slips and are put in a box. another box contains paper slips with numbers less than 10 which are multiples of 3. one slip is taken from the each box. a- what is the probabily of both being odd ? b- what is the probability of getting at least one even ?
question image
Asked by army29676 | 25 Mar, 2022, 08:35: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
Two boys runs a 200m race . The probability of boy A winning the match is 10% more than B winning the match...then what's the probability of B winning the match.
Asked by rahena258 | 10 Mar, 2022, 12:45: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
what is the meaning of probability
Asked by ARARTSRAHEEM | 04 May, 2021, 09:32: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
  A letter is chosen at random from the work EDUCATION. Find the probability that it is not in EXAMINATION
Asked by meera.singh2326 | 11 Aug, 2020, 08:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
A bag containing 5 white, 6 red balls and 9 green balls. A ball is Drawn at random from the bag. Find the probability of (i) A white (or) a red ball (ii) neither a green ball nor a white ball ​​​​​​​
Asked by yehovanissiprayerhouse | 31 Jul, 2020, 10:54: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
2 coins are tossed simultaneously. find the probability of getting 2 heads
Asked by bangalore.likitha | 02 Apr, 2020, 03:18: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
A dice is thrown two times and the total throw is noted. Find the probability that the total score is       1. Even no.     2. Six      3.  Less than 10.
Asked by arpitt682 | 02 Mar, 2020, 05:35: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
A circle with diameter 20cm is drawn somewhere on a rectangular piece of paper with length 40cm and width 30cm.This paper is kept horizontal on table top and a die ,very small in size,is dropped on the rectangular paper without seeing towards it. If the die falls and lands on the paper only,find the probability that it will fall and land: 1.inside the circle. 2.outside the circle
Asked by tarunkumardas32 | 23 Feb, 2020, 02:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Maths
A box contains a ceretain number of balls. Some of these balls are makred A.  Some are makred B and the remainings are marked C   When a ball is drawn at random from the box  P(A)  = 1/3 and P (B) = 1/4 . If there are 40 balls lin the box which are marked as C, find the number of balls in the box   regards rs  
Asked by s.priyamvathaiyer | 24 Apr, 2019, 12:50: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt