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. i. Is 221 – 1 a prime? Give your reason. Note 21 = 3 x 7 is not prime. ii. Is 219 – 1 a prime? Give your reason. iii. Is 223 – 1 a prime? Give your reason. iv. Is 229 – 1 a prime? Give your reason. -

. i. Is 221 – 1 a prime? Give your reason. Note 21 = 3 x 7 is not prime. ii. Is 219 – 1 a prime? Give your reason. iii. Is 223 – 1 a prime? Give your reason. iv. Is 229 – 1 a prime? Give your reason. -

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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. i. Is 221 – 1 a prime? Give your reason. Note 21 = 3 x 7 is not prime. ii. Is 219 – 1 a prime? Give your reason. iii. Is 223 – 1 a prime? Give your reason. iv. Is 229 – 1 a prime? Give your reason. -
Transcribed Image Text:. i. Is 221 – 1 a prime? Give your reason. Note 21 = 3 x 7 is not prime. ii. Is 219 – 1 a prime? Give your reason. iii. Is 223 – 1 a prime? Give your reason. iv. Is 229 – 1 a prime? Give your reason. -
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