5. The percentage of marks obtained by a student in monthly unit tests are given below - Noon Academy

5. The percentage of marks obtained by a student in monthly unit tests are given below

Class 10 | Frank | ICSE | Maths | Probability

5. The percentage of marks obtained by a student in monthly unit tests are given below

Unit Test	I	II	III	IV	V	VI
Percentage of marks obtained by students	$72$	$67$	$69$	$74$	$71$	$76$

(iii) less than $65%$ marks in a unit test.

Answer-

Probability – the chances of something happening.

(iii)

The total number of times that the students who get less than 65% marks in a unit test = $0$

Then,

$P($ less than $65%$ marks in a unit test $)$

= (Number of times student gets less than $65%$ marks in a unit test)/(total

number of tests taken by a student $)$

= $\frac{0}{6}$

= $0$

Dividing Any number by zero, the only answer we get is zero

i

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