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Earn 100

N2=12345678987654321. Find N.

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Important Questions on Numbers and Their Properties

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If a, b, c and d are distinct integers in the range 10-15 (both inclusive), find the greatest value of (a+b) (c+d).
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The smallest natural number which is a perfect square and is of the form abbb lies in between:
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How many number of zeroes will be there at the end of 12! expressed in base 6?
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Find the remainder when (22225555+55552222) is divided by 7.
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LCM of first 100 natural numbers is N. What is the LCM of first 105 natural numbers?
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How many divisors of 105 end with a zero?
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The following expression holds true if we replace some of '+' signs by '×' signs.

1+2+3+4+5+6+7+8+9+10=100

How many '+' signs are needed to be replaced by '×'?
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In a particular country, all the numbers are expressed with the help of three alphabets a, b, and c.

15 is written as abc.

6 is written as bc.

60 is written as bcbc.

How would one write 17 in that country?