Mathematics
Assertion (A) : Class size of the following class intervals is 10.
1 - 10, 11 - 20, 21 - 30, etc.
Reason (R) : The difference between the upper limit and lower limit is the class size.
Both A and R are correct, and R is the correct explanation for A.
Both A and R are correct, and R is not the correct explanation for A.
A is true, but R is false.
A is false, but R is true.
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Answer
Given, the class intervals -
1 - 10, 11 - 20, 21 - 30, etc.
As we know that class size is the difference between upper and lower limits.
Class size = Upper limit - Lower limit
So, reason (R) is true.
1st class interval: 1 - 10
Class size = 10 - 1 = 9
2nd class interval: 11 - 20
Class size = 20 - 11 = 9
So, assertion (A) is false.
∴ A is false, but R is true.
Hence, option 4 is the correct option.
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