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Q: What is the answer if a natural number is doubled when added to its reciprocal?

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One.

the reciprocal is a factor by which you multiply a given number so that their product is 1. ex. 3/5 is the reciprocal of of 5/3.

The number is 121/2.

24

One is added.

2 and 4

6

(143 - 21)/2

Answer: 11It's a list of prime numbersQ:.....since when is 9 a prime number?Answer: 17It's not a list of primes, it's not a Fibonacci sequence. The only pattern I see is that the last number in the sequence gets a number added to it to produce the next number in the sequence, the number that's added doubles each time. E.g. 2+1 = 3 (1 is added)3+2 = 5 (1 is doubled = 2, then added)5+4 = 9 (2 is doubled = 4, then added)9+8 = 17 (4 is doubled = 8, then added)

1

What number when doubled has seven added and gives 13?

There is a complement that when added equals one but you may be thinking of multiplying. A number times its reciprocal (multiplicative inverse) is equal to one. A number added to its additive inverse (opposite) is equal to zero.

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