There are two schemes in Vodafone mobiles. First scheme :1 paise per second, Second scheme :

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08 Jan 2010 vodafone offer

There are two schemes in Vodafone mobiles.

First scheme :1 paise per second,

Second scheme :50 paise per minute,

Following conditions are given -

1. In second scheme, second minute will be started at 0:60 or 1:00,

2. 0 sec. call means to call and cut it abruptly when timer reads 0:00, this is equivalent to a call of 1 sec.

3. In first scheme 0:14 means 15 sec.

The probability that first scheme is more profitable over second in a call ranging from 0:00 (1 sec.) to 3:20 (201 sec.) is ?

OPtion

1) 136/201
2) 139/201
3) 139/200
4) 4/25
5) 17/50
6) 17/25
7) 100/201
8) 1/2
9) 1/4
10) 1

Solution

The ranges in which first scheme is more profitable over second in a call ranging from 0:00 (1 sec.) to 3:20 (201 sec.) is –

0-48, 60-98, 120-148, 180-198,

Hence total seconds in which first scheme is more profitable over second are 136.
Therefore probability that first scheme is more profitable over second in a call ranging
from 0:00 (1 sec.) to 3:20 (201 sec.) is 136/201.

Correct Option: 1 Best Solution (0)