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In a charity show tickets numbered consecutively from 101 through 350 are placed in a box. What is the probability that a ticket selected at random (blindly) will have a number with a hundredth digit of 2?

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0.40

0.50

0.35

0.20

answer is A.

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Detailed Solution

Total events number=350-100= 250
Total Favorable events number with

100^{th}

digit as 2 is

100 \to 299 - 199

= 100

So,
P(E)=

\frac{Favourable events}{Total events}

P = \frac{100}{250}

P = \frac{2}{5}

P=0.40
Correct option is 1.

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