Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

A bag contains 4 red and 3 black balls.A ball is picked up.If it is black it is discarded else if it is red it is put back with another red ball.What is the probability that the second ball drawn is red?

A bag contains 4 red and 3 black balls.A ball is picked up.If it is black it is discarded else if it is red it is put back with another red ball.What is the probability that the second ball drawn is red?

Grade:10

1 Answers

HelloWorld
30 Points
6 years ago
32/(18+32) ,i.e. 16/25.
Make cases for each ball and add up the total number of red and black balss in each case respectively.
The number of red balls upon the total number of balls will be the answer.

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free