Express each of the following numbers as sum of two odd primes
18
32
66
90
please answer if u answer I will make u brainlist
Answers
Answer:
1. 7+11
2 19+13
3.23+43
4. 45+45
Step-by-step explanation:
mark as brainlist...
Answer:
18=>>(5+13), (7+11)
32=>>(3+29), (13+19)
66=>>(5+61),(7+59),(13+53),(19+47),(23+43),(37+29)
99=>>(7+83),(11+79),(17+73),(19+71),(23+67),(29+61),(31+59),(37+ 53),(43+47)
chose any one of the above pairs for each corresponding number.
Step-by-step explanation:
keep subtracting all the prime numbers less than the given number from the number, if the result is also a prime number then u write it down as a pair. lets take 90 for an example, these is the set of prime numbers below 90: (2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89) so you start by taking 89 from 90 and the answer is 1 and since one is not a prime number u just ignore and proceed.90-83=7 since 7 is a prime number as well then we write 83 and 7 s a pair=>(83+7) repeat the procedure until u have the set of all possible pairs