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How many prome number are between 1 and 100...?

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Answer
    25
Explanation

What is a prime number?
A number is greater than 1 is called a prime number, if it has only two factors, 1 and the number itself.


According to the defination of prime number, the prime numbers between and 1 to 100 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97. They are total 25.

  • Find the prime number from 1 to 100 just in 5 second (MATH PRIME NUMBER SHORTCUT TRICK from 1 to 100 number)
  • Find a large number "A" is prime number or not (MATH PRIME NUMBER SHORTCUT TRICK By using Square Root method)
  • Therefore there are 25 prime number between 1 and 100.

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    Prime Number

    A number is greater than 1 is called a prime number, if it has only two factors, 1 and the number itself.

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    NUMBERING SYSTEM (MATH SHORTCUT TRICKS)

  • Find the prime number from 1 to 100 just in 5 second (MATH PRIME NUMBER SHORTCUT TRICK from 1 to 100 number) ?NEW
  • Find a large number "A" is prime number or not (MATH PRIME NUMBER SHORTCUT TRICK By using Square Root method) ?NEW
  • Find the composite number from 1 to 100 just in 5 second (MATH COMPOSITE NUMBER SHORTCUT TRICK from 1 to 100 number) ?NEW
  • NUMBERING SYSTEM QUESTION

  • Is zero even number or odd number (Even, Odd, Both, Neither even nor odd)...?
  • What is the lowest odd prime number (2, 3, -2, -3)...?
  • What are the consective prime number (2 and 3, 5 and 7, 11 and 13, all above)...?
  • Which number is prime number (1, 39, 49, None)...?
  • 1 is prime or composite number (Prime, Composite, both, Neither Prime nor composite)..?
  • Give me numbers which are neither prime nor composite (0, 1, 0 and 1, None)?
  • All non prime number are also the composite number. (True or False)?
  • Which number neither prime nor composite (1, 29, 39, None)...?
  • What is the largest composite number less than 20 (17,18,19,20). ?
  • What is largest composite number less then 30 (23, 25, 28, 29)?
  • The number 4, 6, 8, 9, ... are (odd, even, prime, composite number) ...?
  • All even number greater then 2 are composite number (True, False)... ?
  • How many prime number are between 10 and 30 (5, 6, 7, 8)?
  • How many prime number are between 1 and 100 (25, 27, 29, 31)?
  • Which of the following is prime number (703,731,797,729)...?


  • MATH SHORTCUTS

  • Addition Shortcuts
  • Division Shortcuts