Question

Numbers lies between 2020 and 2070 and has five in it ones place. Is it a prime or composite number? Give reason

Answer 1

Numbers lies between 2020 and 2070 and has five in its ones place - 

So , the numbers are - 

2025 

2035 

2045 

2055 

2065 

These are the numbers which are having 5 in its ones place between 2020 and 2070.

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Prime Numbers -

Prime numbers are the numbers which are having only two factors 1 and the number itself.

Composite Numbers -

Composite numbers are the numbers which are having more than two factors.

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So, the numbers which are having 5 in its ones place between 2020 and 2070 have more than 2 factors . It means not a prime numbers .

Hence : The numbers between 2020 and 2070 and having 5 in its ones place are "Composite Numbers".

Answer 2

it is a composite number because the number will be 2025,2035,2045,2055,2065 .as the no. are having 5 at ones place so they are divisible by 5 also.