Exam Class 8

If A = {a, b, c, d} choose the improper subset of A.

• B ={a, b, d, e}

• C ={a, c, d, b}

• D ={a, b, c}

• E = {a, c. d, e}

what does A - B mean ?

• Elements having common in set A and B.

• Union of elements of set A and B.

• Elements having only in set A

• Elements having only in set B

The quinary number of 7 is

• $10_5$

• $11_5$

• $12_5$

• $13_5$

The scientific notation of 12345 is

• $1234.5\times10$

• $123.45\ \times10^2$

• $12.345\ \times10^3$

• $1.2345\times10^4$

Find the ratio of 600 g and 1 kg in lowest term.

• $\frac{3}{5}$

• $\frac{2}{5}$

• $\frac{5}{3}$

• $\frac{5}{2}$

The listed price of a watch is Rs 2500 and sold it for Rs 1900, what is discount?

• Rs Rs 600

• Rs 1000

• Rs 800

• Rs 900

 $The\deg ree\ of\ 5x^2y^3z$  is

• 4

• 5

• 6

• 7

If x = -2 find value of  $x^3$ .

• 8

• -8

• -6

• 5

 $Choose\ the\ correct\ option\ in\ blank:\ a^2+...................\ +9$  

• 2a

• 6a

• 4a

• a

Simplify; 5m - 8m

• 3m

• 2m

• -3m

• -13m