Praveen has at least one note of each of Rs 10, Rs 2 and Rs .1 How many 1 rupee notes does he have
I The total amount with him is Rs 20
II The total number of notes he has is a prime number.

Options

A. If the question can be answered using one of the statements alone, but cannot be answered using the other statement alone.
B. If the question can be answered using either statement alone.
C. If the questions can be answered using I and II together but not using I or II alone
D. If the question cannot be answered even using I and II together.

Answer

C

Explanation

From statement I, the number of Rs 10 Rs 5, Rs 2 and Rs 1 notes are either 1,1, 1 and 3 respectively or 1,1,2 and 1 respectively.
So the number of Rs 2 notes is either 1 or 2.
`:.` Statement I alone is not sufficient.
From statement, II, we do not know the total amount with Praveen. Hence we can.t answer the question.
Using both the statements the total number of notes is 5 (as the total number of notes is prime) so the number of Rs 2 notes is 2.