Latest Bank Exam Aptitude Question SOLUTION: tickets are numbered from 1,2,,,,1100 and one card is drawn randomly what is the probability of having 2 as a digit

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(#M40164835) BANK EXAM Numerical Ability question probability Keep an EYE

tickets are numbered from 1,2,,,,1100 and one card is drawn randomly what is the probability of having 2 as a digit

Asked In Bank Exam Mukundan (6 years ago)

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kalimuthu p  (6 years ago)

Numbers which dont have 2 from 1 to 9 = 8
Numbers which don't have 2 from 10 to 99:
Let us take two places _ _. Now left most place is fixed in 8 ways. Units place is filled with 9 ways. Total 72 numbers.
Numbers which don't have 2 from 100 to 999 =_ _ _ = 8 × 9 × 9 = 648
Numbers which don't have 2 from 1000 to 1099 =10_ _ = 9 × 9 = 81
Finally 1100 does not have 2. So 1.
Total number with no 2 in them = 8 + 72 + 648 + 81 + 1= 810
Tickets with 2 in them = 1100 - 810 = 290
Required probability = 290 / 1100

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suruthi  (6 years ago)

probability = 1/1100

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