Question

Q. 13 Find the value of
(2-1 + 4-1 + 6-1 + 8-1)' = 1​

Answer 1

Answer:

LCM of 5, 10, 15 and 20 = 60

Now, let us change each of the given fractions into an equivalent fraction with 60 as its denominator.

4

5

=

4×12

5×12

=

48

60

7

10

=

7×6

10×6

=

42

60

11

15

=

11×4

15×4

=

44

60

17

20

=

17×3

20×3

=

51

60

Clearly,

42

60

<

44

60

<

48

60

<

51

60

Hence,

7

10

<

11

15

<

4

5

<

17

20

∴ The given fractions in ascending order are

7

10

,

11

15

,

4

5

and

17

20

.