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### MEAP Preparation - Grade 5 Mathematics1.25 Prime Numbers, Twin Primes and Composite Numbers

 Prime Numbers: A natural number that has only 1 and itself as factors is called a 'prime number'. Examples: 2, 3, 5, and 7 Twin Primes: Two prime numbers whose difference is 2 are called 'twin primes'. Examples: 3, 5 ; 5, 7 ; and 11, 13 Composite Numbers: A natural number that has factors other than 1 and itself is called a 'composite number'. Examples: 9, 10, 12, and 15 Directions: Answer the following questions. Also write at least 10 examples of your own for each Prime Numbers, Twin Primes and Composite Numbers.
 Q 1: _______ is neither prime nor composite?None of these102 Q 2: 5, 7; 11, 13; and 17, 19 are examples of ___________?Twin PrimesDouble PrimesNon-primesComposite Q 3: 2, 3, 5, 7, and 11 are examples of _________.Prime NumbersTwin PrimesNone of theseComposites Q 4: 9, 10, 12, and 15 are examples of ________.Odd NumbersEven NumbersPrime NumbersComposite Numbers Q 5: ________ is an even prime number.1420 Q 6: Which are the first ten composite numbers?None of these2,4,6,8,10,12,14,16,18,20.1,3,5,7,9,11,13,15,17,19.4,6,8,9,10,12,14,15,16,18. Q 7: Which are the first ten prime numbers?2,3,5,7,11,13,17,19,23,292,4,6,7,9,12,16,19,21,232,3,4,5,6,7,8,26,27,292,3,4,5,6,7,8,9,10,25 Q 8: A prime number has ________ factors.exactly threemanyzeroexactly two Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!