Click to Chat

1800-1023-196

+91-120-4616500

CART 0

• 0

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 man takes a step forward with probability 0.4 and backwards with probability 0.6.Find probability at the end of 11 steps he is one step away from the starting point. `
one year ago

Arun
24739 Points
```							One step away means a step forward or a step backward=> either he took 6 forward steps and 5 backward steps or 6backward steps and 5 forward steps=> reqd. probability= 11C6 * (0.4)^6 * (0.5)^5 + 11C6 * (0.4)^5 * (0.6)^5= 11C5 * (0.4)^5 * (0.6)^5 * (0.4 + 0.6) ... [11C6 = 11C5]= (11x10x9x8x7)/(1x2x3x4x5) * (0.24)^5= 0.368. RegardsArun (askIITians forum expert)
```
one year ago
Think You Can Provide A Better Answer ?

Other Related Questions on IIT JEE Entrance Exam

View all Questions »

Course Features

• 731 Video Lectures
• Revision Notes
• Previous Year Papers
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Test paper with Video Solution

Course Features

• 731 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions