Question

To get the product 1, we should multiply 8/21 by
a. 8/21
b. -8/21
c. 21/8
d. -21/8

Answer 1

To get the product 1 , we should multiply 8/21 by 21/8 i.e (c).

Hope this may helps uu.........

Answer 2

To get the product 1, we should multiply 8/21 by 21/8 (c)
because the product of any number with its reciprocal results 1.
So, the option (c) 21/8 is the answer.