exercise 1.2 question number 6 and 7 class 10th answer
Saakshi01:
may I get to know, is this exercise is from NCERT ??
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Answered by
19
hey.... Mate here's ur answer !!
Question : 6
solution = 7 × 11 × 13 + 13
= 13 × ( 7 × 11 + 1 )
= 13 × ( 77 + 1 )
= 13 × 78
it can be also written as ,
= 13 × 13 × 6
the given expression has 6 and 13 as its factor other than 1 and no. itself
therefore,
it is composite number.
now,
7 × 6× 5× 4×3×2×1+ 5
= 5( 7 × 6× 4×3×2×1 + 1 )
= 5 ( 1008 + 1 )
= 5 × 1009
1009 cannot be factorized further
the given expression has 5 and 1009 as its factor other than 1 & no. itself
Hence it is a composite no.
Question 7 =
Solution =.......( Use Attachment given above )
Answer = 36 min
hope it might be helpful !!
Question : 6
solution = 7 × 11 × 13 + 13
= 13 × ( 7 × 11 + 1 )
= 13 × ( 77 + 1 )
= 13 × 78
it can be also written as ,
= 13 × 13 × 6
the given expression has 6 and 13 as its factor other than 1 and no. itself
therefore,
it is composite number.
now,
7 × 6× 5× 4×3×2×1+ 5
= 5( 7 × 6× 4×3×2×1 + 1 )
= 5 ( 1008 + 1 )
= 5 × 1009
1009 cannot be factorized further
the given expression has 5 and 1009 as its factor other than 1 & no. itself
Hence it is a composite no.
Question 7 =
Solution =.......( Use Attachment given above )
Answer = 36 min
hope it might be helpful !!
Attachments:
Answered by
2
Answer:
I hope this help you
Step-by-step explanation:
this is question number 6 and question number 7
Attachments:
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