Interpretation
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Hi,
According to statement(2):
If the set of consecutive integers is {1,2,3,4,5,6}, the n- digit number formed is the number 12345.
If the set is {2,3,4,5,6,7}, the number is 234567.
According to statement(2):
If the set of consecutive integers is {1,2,3,4,5,6}, the n- digit number formed is the number 12345.
If the set is {2,3,4,5,6,7}, the number is 234567.
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- kmittal82
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Ah, formed "by the series", now I get it. Thanks FrankensteinFrankenstein wrote:Hi,
According to statement(2):
If the set of consecutive integers is {1,2,3,4,5,6}, the n- digit number formed is the number 12345.
If the set is {2,3,4,5,6,7}, the number is 234567.
- amit2k9
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a for n = 6 there will be 3 even numbers and 3 odd numbers.
sum of 3 odd numbers say 3,5,7 = odd and sum of 3 even numbers = even
thus e+ o = odd. sufficient.
b the sum of the integers = multiple of 9.
hence, for n(n+1) = 4,5 sum is odd.
for , (n-1)n(n+1) = 9*2 = 18 meaning n=6. thus 5+6+7 = 18 = even.
thus not sufficient.
hence A it is.
sum of 3 odd numbers say 3,5,7 = odd and sum of 3 even numbers = even
thus e+ o = odd. sufficient.
b the sum of the integers = multiple of 9.
hence, for n(n+1) = 4,5 sum is odd.
for , (n-1)n(n+1) = 9*2 = 18 meaning n=6. thus 5+6+7 = 18 = even.
thus not sufficient.
hence A it is.
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