Question

Write any two classes whose class mark is 25

Answer 1

1)class 20-30
2)class 10-40

Answer 2

Let the lower limit be 0 .

Class Mark = Upper Limit + Lower

Limit / 2

25 = Upper Limit + 0 / 2

25 × 2 = Upper Limit + 0

50 = Upper Limit + 0

Upper Limit = 50 - 0

Upper Limit = 50

Therefore, Class = 0 - 50

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Second Class

Let the Let the lower limit be 1.

Class Mark = Upper Limit + Lower

Limit / 2

25 = Upper Limit + 1 / 2

25 × 2 = Upper Limit + 1

50 = Upper Limit + 1

Upper Limit = 50 - 1

Upper Limit = 49

Therefore second class = 1 - 49