Sahil has a collection of cards with a two digit number on them. If the total number of cards he has is 117, then how many cards have same numbers on them at the least? (3
Answers
Answer:
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Given : Sahil has a collection of cards with a two digit number on them.
the total number of cards he has is 117,
To Find : how many cards have same numbers on them at the least
Solution:
Two Digit numbers from 10 to 99
are 90 in Counts
Hence 90 card can have different numbers
now if remaining card 117 - 90 = 27 will have any repeated number
if all 27 cards are different then they will match with any of the card hence
then 27 + 27 = 54 card have same numbers on them
if all 27 cards are same then 27 + 1 = 28 card have same numbers on them
Hence atleast 28 cards have same numbers on them at the least
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