Is the product of two primes greater than 2 prime or even

RELATED INFORMATIONS

• 1. There are many students reading books in the library. Boys account for 40%. Later, four boys came in. At this time, boys account for 7 / 16 of the total number. How many people were there in the library? Using X solution Formula: OK, if you want to score all OK, 5, 0.15.20 ~ 1OO
• 2. The average number of a, B and C is 40, the ratio of a to B is 3:2, C is equal to half of B, what are the numbers of a, B and C
• 3. The ratio of a, B and C is 5:3:4. The number of a is 20. How much less is the number of B than the number of a?
• 4. The number of a is five times that of B. what is the ratio of a and B, what is the ratio of the sum of a and B, and what is the ratio of a and B?
• 5. It takes 6 minutes for a part to be processed, 5 minutes for B and 4 minutes for C. now, 2220 parts are processed by 3 people in the same time, and each person is assigned How many parts of the mission? In proportion
• 6. The grain quality ratio of warehouse A and warehouse B is 8:7, one fourth of which is transported from warehouse A. if warehouse B increases by 6 tons, then warehouse B will have 14 tons more than warehouse A. how many tons each of warehouse A and warehouse B had
• 7. If you dream of becoming a spaceman when you____ up ,get started now!A spaceman n_____ a strong body and keen mind .You still have a long way to g_____ .Do you know what Shenzhou VI spaceman are able to do?Shenzhou VI spaceman are able to l______ upside down .They do this not just during s______ ,but also when eating and going to the toilet.Before f____ into space,they had lots of p____ .Echn upside-down training l____ for many days.They also have to know every part of the spaceship and how it w_____ .If something g____ wrong,they must know how to repair it. 1. ABCD and apqr are parallelogram, P, Q, R are on AB, AC, ad respectively, AP = 2qc, s quadrilateral ABCD = 36, then s quadrilateral apqr= A20 B24 C16 D18 2. Given a: B = C: D, then the middle term of the ratio of a & sup2; + C & sup2; and B & sup2; + D & sup2; is A、ac+bd B、ad+bc C、ad+cb D、ad+cd
• 8. lg20+log100（25）=_______ The solution of equation 2log3 (x) = 1 / 4 is________ log5(2)+2/3lg8+lg5lg20+(lg2)²=_________
• 9. 1, 2, 3, 4, 5, 6, 8, 12, 24 and 9 numbers are filled in the blank, so that the product of the multiplication of 3 numbers on each line is equal O——O——O I \ i / I O——O——O I / I \ I O——O——O
• 10. There are two sequences: 1, 3, 5, 7, 9 11,13,15,17,19,…… 1993 and 1,4,7,10,13,16,19 1993, find the number of the same number
• 11. The product of a prime number multiplied by an even number must be () A. Odd B. even C. prime
• 12. The product of two primes must be?
• 13. The product of two primes is 94, and the sum of the two primes is______ ．
• 14. The product of two prime numbers is 94, the sum of these two prime numbers is (), and their greatest common factor is ()
• 15. 511 is not a prime number. Which two numbers' product = 511?
• 16. If both numbers are prime, then their product has a factor
• 17. A number () and two factors () are called prime numbers
• 18. If () has two factors, such a number is called prime or (). The smallest prime is ()
• 19. The maximum factor of a number is 2001, and the minimum multiple of the number is (). The sum of two prime numbers is 2001, and the product of the two prime numbers is ()
• 20. The least common multiple of two primes is 91, and the sum of the two primes is______ ．