CSIR NET 2017 Mathematical Science Question Paper (18-Jun-2017)

Question 1

'N' is a two digit number such that the product of its digits when added to their sum equals N. The unit digit of N would be

Accepted Answer

9

Answer

1

Answer

7

Answer

8

Question 2

If $P + \frac{1}{Q} = 1$ and $Q + \frac{1}{R} = 1$, then what is PQR?

Accepted Answer

-1

Answer

2

Answer

-2

Answer

cannot be calculated

Question 3

What is the remainder when $3^{256}$ is divided by 5?

Accepted Answer

1

Answer

2

Answer

3

Answer

4

Question 4

If equal weights of 22 carat gold (alloy of 22 parts gold and 2 parts copper by weight) and 24 carat gold (pure gold) are mixed to form an alloy, what will be the weight proportion of copper in the alloy?

Accepted Answer

$\frac{1}{24}$

Answer

$\frac{1}{2}$

Answer

$\frac{1}{8}$

Answer

$\frac{1}{12}$

Question 5

A $4m 	imes 4m$ floor needs to be covered by tiles of size $2m 	imes 1m$. Two diagonally opposite corners of size $1m 	imes 1m$ should be left uncovered. How many tiles are required to complete the job without breaking the tiles or overlapping them?

Accepted Answer

Impossible to cover

Answer

6

Answer

7

Answer

8

CSIR NET 2017 Mathematical Science Question Paper (18-Jun-2017)

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