Question

Solve the following questions:​

Answer 1

que3. cf = 5,11,26,36,41,45,47,49

n+1/2=50/2=25

median=l+(n/2 -cf/f)×h

= 25 + (25 - 36)/5 × 5

=25-11=14

que4. cf = 2,7,7+x,19+x,36+x,56+x,56+x+y,65+x+y,72+x+y,76+x+y

76+x+y=100

x+y=24

525=500+(50-36-x)/20 × 100

25=(14-x)5

5=14-x

x=9

x+y=24

9+y=24

y=15

hence, x=9 , y=15

que6.

1. 18/36
2. 12/36
3. 3/36
4. 8/36

que7. 8/24=1/3

que8. let root 7 be rational number

therefore, root 7 =p/q

squaring

7=(p/q)^2

p^2=7q^2

hence it is divisible by 7

and also the factor of q

therefore it is contradicted our assumption

hence root 7 is an irrational number