1. Which of the following is the cube root of -64/ 343 ?

a) 7/4 b) -7/4 c) 4/7 d) -4/7

2. Which of the following is a perfect cube ?

a) 10000 b) 243 c) 343 d) 270000

3. If 2/5x = 4 then which of the following is the value of x ?

a) -9 b) 9 c) -1/9 d) 1/9

4. Complete the given pattern including two more consecutive steps ?

7^{2 }= 49

67^{2} = 4489

667^{2 }= 444889

6667^{2 }= 44448889

5. What is the smallest number by which 648 must be multiplied so that the product is a perfect cube ?

6. Sove the equation -

x+3/4 = 2x-3/5

7. There are 500 children in a school , for a P.T. drill , tehy have to stand in such a manner that the number of rows is equal to the number of columns. How many children would be left out in this arrangement ?

1. d -4/7

2.c. 343

4.66667^{2}=4444488889 666667^{2}=444444888889

5.It should be multiplied by3.

6.x+3/4=2x-3/5 2x-x=3/4+3/5 x=15+12/20=27/20

7.Let the no. of student in each row=x. Then no of student in the arrangement=x*x=x^{2}

^{x2=}500. x=22

22 students in each row and columns.

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