Question

1. The smallest number by which 980 must be multiplied so that the product is a perfect square is *

1 point

5

7

6

3

2. The digit in the units place of the cube of 47 is *

1 point

9

7

3

1

3. Which number is NOT a perfect square? *

1 point

64

169

300

400

4.Obtain the product of -4xy and 1 is *

1 point

-4xy

0

-4x

-4y

5. A bag contains 4 Red marbles , 7 blue marbles and 4 green marbles. The probability of selecting a red marble is *

1 point

4/11

4/15

7/15

7/11

6.which of the following number are perfect cube? *

1 point

144

125

121

81

7.Out of 17 boys and 13 girls of a class ,one student is to be selected. The probability of selecting a girl is *

1 point

17/30

13/30

15/30

13/17

8.Simplify: (x+7 y)(7 x-y) *

1 point

48xy

- 48xy

7x-7y

none of these

9. Simple Interest on Rs. 800 for 15 months at 12 % per annum is Rs.144 *

1 point

True

False

10. The product of two square numbers is always a square number. *

1 point

True

False

​

Answer 1

Answer:

Q1-5

Q2-9

Q3-300

Q4= -4xy

Q5-4/15

Q6-125

Q7-13/30

Q8-none of these

Q9-false

Q10-true