[1 Mark Question Answer]

Question 11 Mark

If $P_n$ means prime factors of $n$, find $P_{42}$

Answer

$F _{42}=1,2,3,6,7,14,21,42$
P. $F_{42}=2,3$ and 7 .

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Question 21 Mark

If $P_n$ means prime factors of $n$, find $P_{50}$

Answer

$F_{50}=2,5,5$
P. $F_{50}=2$ and 5.

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Question 31 Mark

If $P_n$ means prime factors of $n$, find $P_{24}$

Answer

$F_{24}=1,2,3,4,6,8,12,24$
P. $F_{24}=2$ and 3.

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Question 41 Mark

If $P_n$ means prime factors of $n$, find $P_6$

Answer

$F_6=1,2,3,6$
P. F 6 (Prime factor of 6$)=2$ and 3 .

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Question 51 Mark

Write the prime-numbers from 9 to 59

Answer

11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47 and 53.

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Question 61 Mark

Write the prime-numbers from 8 to 48

Answer

11, 13, 17, 19, 23, 29, 31, 37, 41, 43 and 47.

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Question 71 Mark

Write the prime-numbers from 2 to 32

Answer

3, 5, 7, 11, 13, 17, 19, 23 29 and 31.

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Question 81 Mark

Write the prime-numbers from 5 to 45

Answer

7, 11, 13, 17, 19, 23, 29, 31, 37, 41 and 43.

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Question 91 Mark

Write all prime numbers between 8 and 76

Answer

11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71 and 73.

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Question 101 Mark

Write all prime numbers between 15 and 35

Answer

17, 19, 23, 29 and 31

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Question 111 Mark

Write all prime numbers less than 25

Answer

2, 3, 5, 7, 11, 13, 17, 19 and 23

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Question 121 Mark

Write all the factors of 84

Answer

Factors of $84=F_{84}=1,2,3,4,6,7,12,14,21,28,42$ and 84 .

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Question 131 Mark

Write all the factors of 36

Answer

Factors of $36=F_{56}=1,2,3,4,6,9,12,18$ and 36.

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Question 141 Mark

Write all the factors of 48

Answer

Factors of $48=F_{48}=1,2,3,4,6,8,12,16,24$ and 48

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Question 151 Mark

Write all the factors of 55

Answer

Factors of $55= F _{55}=1,5,11$ and 55

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Question 161 Mark

Write all the factors of 15

Answer

Factors of $15=F_{15}=1,3,5$ and 15

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