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Earn 100

Chandrabhal adds first N natural numbers and finds the sum to be 1850. However, actually, one number was added twice by mistake. Find the difference between N and that number.

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Important Questions on Numbers and Their Properties

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When I distribute a packet of chocolates to 7 students, I am left with 4 chocolates. When I distribute the same packet of chocolates to 11 students, I am left with 6 chocolates. How many chocolates will be left with me if I distribute the same packet of chocolates among 13 students (a packet of chocolate contains a total number of N chocolates, where 1000<N<1050) ?
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How many prime numbers are there between 80 and 105 ?
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If x and y are consecutive natural numbers in an increasing order, then which of the following is always true?
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What is the remainder when 579 is divided by 7?
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The LCM of two natural numbers is 590 and their HCF is 59. How many sets of values are possible?
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MUL has a waiting list of 5005 applicants. The list shows that there are at least 5 males between any two females. The largest number of females in the list could be:
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HCF of two numbers A and B is 24. HCF of two other numbers C and D is 36. What will be the HCF of A, B, C, and D?
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How many zeroes will be there at the end of 25×35×40×50×60×65?