ZuzannaGem ZuzannaGem

15-03-2020
Mathematics

contestada

The nth term of a sequence is n²+4
Alex says: "The nth term of the sequence is always a prime number when n is an odd number."
Alex is wrong.
Give an example to show that Alex is wrong.

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kcough03 kcough03

15-03-2020

9.
9 squared is 81. 81+4=85. 85 is divisible by 5.

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