Putting value of n = 1, 2..

Number = xn+yn is not divisible by x-y

And only satisfying the option 4 condition.

Smallest 4 digit number = 1000
= 1000 + 13 = 1013

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no of students who passed in at least one subject: AUB=65+70-50=85 If total students are 100 .no of students who failed in both subjects = total students-students who passed in at least one subjective. 100-85=15

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Total fruits are 12. Chances to select banana or apple is: 4+3=7 Probability =7/12

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None of the above. 883/11, Remainder = 3 Number divisible by 11 = 883-3 => 880 p-7 = 880, p = 887

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