Questions
The number of natural numbers less than one million that can be formed by using the digits, , and 3 is
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a
728
b
726
c
730
d
732
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Correct option is A
The number of k digit natural numbers formed by using the digit and 3 is 23k−1∴ Number of natural numbers less than one million formed by 0,2 and 3 is=2+(2)(3)+(2)32+233+234+235=728Similar Questions
The number of ways in which we can get at least 6 successive tails when a coin is tossed 10 times in a row, is
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