The final marks in mathematics of 30 students are as follows:53, 61, 48, 60, 78, 68, 55, 100, 67, 90, 75, 88, 77, 37, 84, 58, 60, 48, 62, 56, 44, 58, 52, 64, 98, 59, 70, 39, 50, 60. Find the number of students who scored more than or equal to 90.

# The final marks in mathematics of 30 students are as follows:53, 61, 48, 60, 78, 68, 55, 100, 67, 90, 75, 88, 77, 37, 84, 58, 60, 48, 62, 56, 44, 58, 52, 64, 98, 59, 70, 39, 50, 60. Find the number of students who scored more than or equal to 90.

1. A
3
2. B
4
3. C
5
4. D
9

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### Solution:

The given data shows the final marks in mathematics of 30 students are as follows:
53, 61, 48, 60, 78, 68, 55, 100, 67, 90, 75, 88, 77, 37, 84, 58, 60, 48, 62, 56, 44, 58, 52, 64, 98, 59, 70, 39, 50, 60.
We need to find the number of students who scored more than or equal to 90.
The given data can be grouped as follows:
Let the number of students who scored more than or equal to 90 be $\mathrm{x}$.
From the table,
We know that 90, 98,  and 100 are the scores which are more than or equal to 90.
$⇒\mathrm{x}=3$
Thus the number of students who scored more than or equal to 90 is 3.
Hence, the correct option is 1.

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