first term class 9

 $what\ is\ the\ value\ of\ A\cap B\ \ if\ A=\left\{1,2,3,4,5\right\}\ and\ B=\left\{3,2,5,4\right\}?$ 

• {2,3,4}

• {1,2,3,4,5}

• {2,3,4,5}

• {4,5}

what is formula of n(AUB) in A and B are overlapping sets?

• n(A)+n(B)

• n(A)+n(B)+n(A $\cap$ B)

• n(A)+n(B)+n(A $\cup$ B)

• n(A)+n(B)-n(A $\cap$ B)

 $If\ n(A)=50,\ n(B)=60\ and\ n(AUB)=100\ then\ find\ n(A\cap B).$ 

• 10
  

• 20

• 30

• 40

 $which\ is\ the\ formula\ of\ profit\ percent$  

•  $\frac{profit\ }{SP}\times100\%$  

•  $\frac{profit\ }{CP}\times100\%$  

•  $\frac{profit\ }{MP}\times100\%$  

•  $\frac{profit\ }{Discount}\times100\%$  

 $which\ is\ the\ formula\ of\ loss\ percent$  

•  $\frac{loss\ }{SP}\times100\%$  

•  $\frac{loss\ }{MP}\times100\%$  

•  $\frac{loss\ }{CP}\times100\%$  

•  $\frac{loss\ }{Discount}\times100\%$  

 $which\ is\ the\ formula\ of\ discount\ percent$  

•  $\frac{discount\ }{SP}\times100\%$  

•  $\frac{discount\ }{\Pr ofit}\times100\%$  

•  $\frac{discount\ }{CP}\times100\%$  

•  $\frac{discount\ }{MP}\times100\%$  

20% profit of Rs.200 is....

• 40

• 30

• 20

• 50

what is 2% commission of Rs. 80,00,000?

• 1,20,000

• 1,40,000

• 1,60,000

• 1,80,000

what is the price after discount if MP=1000 and dis.=137

• 937

• 963

• 863

• 837

if MP=Rs400, SP=Rs360 then find discount %....

• 40%

• 30%

• 20%

• 10%