Is 2980 is a Composite number

 Is 2980 is a composite number or not ?

  • As we already know that, the number having factors 1 and the number itself is the prime number.
  • And numbers having more than these two factors are the composite numbers.
  • To check whether the number 2980 is composite or not first we have to find its factors.

 

Factors of 2980:

  • If we have taken numbers from 1, 2, 3…for checking factors of 2980, we found that 2980 has factors 1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490 and 2980. Hence, we must say that 2980 is a composite number.
  • Thus, 2980 is the composite number.
  • If we multiply 2980 by 1, 2, 3 then we get the multiples of 2980 which are 2980, 5960 and so on.

 

About the number 2980:

  • 2980 has more than two factors which are 1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490 and 2980 and hence it is the composite number.
  • 2980 is the even composite number and it is not the perfect square also.
  • If we divide 2980 by, 1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490 and 2980 then we get remainder as zero. Hence, 1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490 and 2980 are the factors of 2980.

 

Note:

  • 2980 is not the perfect square.
  • Factors of 2980: 1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490 and 2980
  • Prime factors of 2980: 2, 5, 149

 

Conclusion:

  • 2980 is the composite number which has factors, 1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490 and 2980
  • And hence, 2980 is not the prime number.

 

Multiple Choice Questions:

 

1) 2980 is a

a) Prime number

b) Odd number

c) Composite number

d) Both a and c

Ans: c) composite number

 

2) The composite factors of a composite number 2980 are

a) 2980

b) 2, 5, 149

c) 4, 10, 20, 298, 596, 745, 1490 and 2980

d) 1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490 and 2980

Ans: c) 4, 10, 20, 298, 596, 745, 1490 and 2980

 

3) 2980 is even composite number because

a) It has factors 1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490 and 2980

b) It has only two factors

c) Divisible by 2

d) Both a and c

Ans: d) both a and c

Updated: January 8, 2022 — 2:42 pm

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