Question

questions 01 2 marks each.
estion No. 13 to 15 are Short Answer Type questions of 3 marks each
estion No. 16 and 17 are Long Answer Type questions of 5 marks each
ernal choice is provided in 2 questions of 2 marks, 2 questions of 3 marks and
stion of 5 marks.
Part-A
Section -
Section I has 7 questions of 1 mark each. Internal choice is provided
in 3 questions
4410
State whether
terminates or not. If yes, after how many
2x3²x5²x7
decimal places.
IF HCF (143, 440) = 11, then what is the LCM (143, 440)?
OR
Express 4732 as the products of primes.​

Answer 1

Answer:

q

p

​  

 is terminating if  

a) p and q are co-primes  

           and  

b) q is of the form 2  

m

×5  

n

 

      where m and n are non negative integers

i)  

12

11

​  

 

11 and 12 have no common factors ,

so 11 and 12 are co-primes

       

    12= 2  

2

×3  

1

 

and the denominator 12 is not of the form 2  

m

×5  

n

 

hence  

12

11

​  

 is a  non-terminating repeating decimal

ii)    

1600

15

​  

=  

320

3

​  

 

here, 3 and 320 have no common factors  

so 3 and 320 are co-primes  

 

         320= 2  

6

×5  

1

 

where,     m=6 and n=1

and the denominator 320 is of the form 2  

m

×5  

n

 

where, m and n are non negative integers  

hence  

1600

15

​  

 is a terminating decimal

Step-by-step explanation:

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