Question

1) The Prime factorization of 126 is _____________

a) 2 X 2 X 3 X 6 b) 2 X 3 X 3 X 7 c) 2 X 3 X 3 X 4

d) none of these

2) Write all the prime numbers less than 25.

3) Find common factors of 72 & 80

4) Write the prime factorization of

a) 60 b) 880 c) 1220

5) Write all the composite numbers between 30 and 50.

6) Express the smallest 5 – digit number in the form of prime factor.

7) Using divisibility test check whether the following are divisible by 4.

(a) 91800 (b) 31956 (c) 81615 (d) 61042

(e) 48400 (f) 99909​

Answer 1

Answer:

1)d;none of these.

2) Prime numbers less than 25 are 2,3,5,7 ,11, 13, 17 ,19 ,20, 21 ,23

3) Common factors of 72 and 80 are 1,2,4,8.

4) Prime factorization of a) 60=3×5×2×2 b)880=2×2×2×11×5×2 c)1220=2×2×5×61.

5)Composite numbers between 30 and 50 are 32,33,34,35,36,38,39,40,42,44,45,46,48,49.

6) Smallest 5 digit number is 10000.

Prime factorization of 10,000=5×5×5×2×2×2×5×2.

7)a)91800,b)31956,e)48400 are divisible by 4

Answer 2

Answer:

6)- is your answer!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!