Amit of class 9A gets the first chance to pick the jersey number. Amit

1.	Amit of class 9A gets the first chance to pick the jersey number. Amit loves doublets. What is the probability that his jersey number is a doublet??
Answer» $\sf{\fbox{taking the maximum jersey as 100}}$ $\sf{doublets \: are \: 11,22,33,44,55,66,77,88,99}$ $\sf \purple{total \: duplets :9 }$ $\sf \green{total \: observations :100}$ $\sf \blue{probability = \frac{favourable \: observations}{total \: observation} } \\$ $\sf \pink {\underbrace{ \overbrace{probability = \frac{9}{100} = 0.09 }}}$