Write down the four factors of 45, apart from 1 and 45 - Junior Cycle Mathematics - Question 2 - 2019
Question 2
Write down the four factors of 45, apart from 1 and 45.
Answer:
(b) n is a whole number bigger than 1. It has just two factors: 1 and n.
Put a tick (✓) in the ... show full transcript
Worked Solution & Example Answer:Write down the four factors of 45, apart from 1 and 45 - Junior Cycle Mathematics - Question 2 - 2019
Step 1
Write down the four factors of 45, apart from 1 and 45.
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Answer
The four factors of 45, apart from 1 and 45, are 3, 5, and 9. Therefore, I write: 3, 5, 9.
Step 2
n is a whole number bigger than 1. It has just two factors: 1 and n. Put a tick (✓) in the correct box to show what name is given to this type of number. Tick one box only.
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Answer
The correct box to tick is 'prime'. A prime number is defined as a number greater than 1 that has no positive divisors other than 1 and itself.
Step 3
p is a whole number. Apart from 1 and p, the only other factor that p has is 7. Work out the value of p.
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Answer
Since the only factors are 1, 7, and p itself, p must be equal to 7. Thus, the value of p is 49.
Step 4
Write down the four factors of 12k + 8, apart from 1 and 12k + 8. Two of the factors should be in terms of k.
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Answer
The factors of 12k + 8 can be represented as: 2, 4, 3k + 2, and 6k + 4.
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