Question

(i) How many times the digit 9 occurs between 1 to 100
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Answer 1

Answer:

9,19,29,39,49,59,69,79,89,90,91,92,93,94,95,96,97,98,99.

these number have 9 so total number of 9 between 1 to 9 are 20 times

Answer 2

Answer:

$\: 9 \: occurs \: in \: 1 \: to \: 100 \: are \: 9 \: 19\:29\:39\:49\:59\:69\:79\:89\:90\:91\:92\:93 \: 94 \: 95 \: 96 \: 97 \: 98 \: 99$