question_answer

           

Which information are necessary to answer the questions asked-

Find the two digit number.

I. The product of the two digits of the two digit number is 20.

II. The difference between the two digits of the two digit number is 1.

III. The sum of the .two digits of the two digit number is 9.

A)  None of these

B)  II and III together are sufficient

C)  III and (I or II are sufficient)          

D)  All three together are sufficient

E)  All three together are not sufficient