Q75 of 125 Page 38

What is the product ofand its reciprocal?

As we know that reciprocal of a fraction is obtained by interchanging the numerator and denominator of fraction.


Product of given number and its reciprocal,



∴ Product of a number and its reciprocal is always equal to 1.


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73

In a hurdle race, Nidhi is over hurdle B andof the way through the race, as shown in Fig. 2.7.


Then, answer the following:


a) Where will Nidhi be, when she isof the way through the race?


b) Where will Nidhi be when she isof the way through the race?


c) Give two fractions to tell what part of the race Nidhi has finished when she is over hurdle C.

 74

Diameter of Earth is 12756000m. In 1996, a new planet was discovered whose diameter isof the diameter of Earth. Find the diameter of this planet in km.

 76

Simplify:

 77

Simplify: