Do You Have IT In You? To Take This Class 7 Maths Quiz

1) Which of these nos. is less than -2020?

-3030

-2002

2020

0

The number -3030 is less than -2020 because it has a smaller value when compared to -2020. In the number line, -3030 is located to the left of -2020, indicating that it is a smaller number.

Explanation

The number -3030 is less than -2020 because it has a smaller value when compared to -2020. In the number line, -3030 is located to the left of -2020, indicating that it is a smaller number.

2) The digit 7 in the no. 27109 is replaced by 5.By how much will the no. decrease?????

2

2000

2109

5000

When the digit 7 in the number 27109 is replaced by 5, the new number becomes 25109. The difference between the original number and the new number is 2000. Therefore, the number will decrease by 2000.

Explanation

When the digit 7 in the number 27109 is replaced by 5, the new number becomes 25109. The difference between the original number and the new number is 2000. Therefore, the number will decrease by 2000.

3) Saba has 10 stamps more than Amrita.Daya has 10 stamps less than Amrita . Which of the following is true??

Saba has 20 stams more than Daya

Saba has 10 stamps more than Daya

Saba=Daya

Cant say

Saba has 10 stamps more than Amrita and Daya has 10 stamps less than Amrita. Therefore, Saba has a total of 20 stamps more than Daya.

Explanation

Saba has 10 stamps more than Amrita and Daya has 10 stamps less than Amrita. Therefore, Saba has a total of 20 stamps more than Daya.

4) By how much is 50,000,000 greater than 5,00,000?

5 lakhs

45 lakhs

50 lakhs

4 crore

The correct answer is 45 lakhs because 50,000,000 is 45 lakhs greater than 5,00,000.

Explanation

The correct answer is 45 lakhs because 50,000,000 is 45 lakhs greater than 5,00,000.

5) 31 is a factor of 1767 and 3543 is a multiple of 1767.which of these is true?

31 is a factor of 3534

31 is a multiple of 3534

1767 is a common factor of 31 & 3534

31 is a common multiple of 1767 & 3534

Since 31 is a factor of 1767 and 3543 is a multiple of 1767, it implies that 31 is a factor of 3543 as well. Therefore, the statement "31 is a factor of 3534" is true.

Explanation

Since 31 is a factor of 1767 and 3543 is a multiple of 1767, it implies that 31 is a factor of 3543 as well. Therefore, the statement "31 is a factor of 3534" is true.

6) Which of these is the same as 23 1/19?

23+1/19

23-1/19

23*1/19

23/1/19

The given expression "23 1/19" represents a mixed number, which is a whole number combined with a fraction. To convert it to an expression without a mixed number, we can rewrite it as "23 + 1/19". Therefore, the correct answer is "23+1/19".

Explanation

The given expression "23 1/19" represents a mixed number, which is a whole number combined with a fraction. To convert it to an expression without a mixed number, we can rewrite it as "23 + 1/19". Therefore, the correct answer is "23+1/19".

7) Which of the following fractiojns is nearest to 2?

1/2 + 1/4

1/4 +1/6

2/3+6/7

2/5+1/10

The fraction 2/3 + 6/7 is the nearest to 2 because when we calculate the sum, we get 20/21, which is closest to 2 compared to the other options.

Explanation

The fraction 2/3 + 6/7 is the nearest to 2 because when we calculate the sum, we get 20/21, which is closest to 2 compared to the other options.

8) Antra cal. the product 2222*2223*22*24 and got a number.What will be the remainder when the product is divided by 10?

2

3

4

8

When finding the remainder when a number is divided by 10, we only need to consider the last digit of the number. In this case, the product of 2222, 2223, 22, and 24 will have a last digit of 8. Therefore, when this product is divided by 10, the remainder will be 8.

Explanation

When finding the remainder when a number is divided by 10, we only need to consider the last digit of the number. In this case, the product of 2222, 2223, 22, and 24 will have a last digit of 8. Therefore, when this product is divided by 10, the remainder will be 8.

9) What can be said about the number obtained on sub (-2010 from 2010)??

It is 0

It is smaller than -2010

It is greater than 2010

It is a positive number smaller than 2010

When subtracting a negative number from a positive number, the result will always be greater than the original positive number. In this case, when we subtract -2010 from 2010, we are essentially adding 2010 to 2010, resulting in a number greater than 2010.

Explanation

When subtracting a negative number from a positive number, the result will always be greater than the original positive number. In this case, when we subtract -2010 from 2010, we are essentially adding 2010 to 2010, resulting in a number greater than 2010.

10) Which of the following is considered a primary function of a Database Management System (DBMS)?

To manage CPU performance

To facilitate hardware configurations

To manage data security and integrity

To enhance graphical user interface designs

A Database Management System (DBMS) is primarily used to store, retrieve, and manage data in databases. It ensures data security, maintaining data integrity, and enforcing data privacy policies. This includes controlling access to data to prevent unauthorized access and providing mechanisms to maintain consistency among data copies and to recover data correctly and quickly in the event of a system failure. While DBMSs may indirectly affect other areas such as performance optimization, their primary role is managing data effectively and securely.

Explanation

A Database Management System (DBMS) is primarily used to store, retrieve, and manage data in databases. It ensures data security, maintaining data integrity, and enforcing data privacy policies. This includes controlling access to data to prevent unauthorized access and providing mechanisms to maintain consistency among data copies and to recover data correctly and quickly in the event of a system failure. While DBMSs may indirectly affect other areas such as performance optimization, their primary role is managing data effectively and securely.