If * is defined for all positive real numbers a and b by ab=ab/(a+b), then 102=?

Created: 5 years ago | Updated: 3 years ago

5/3

5/2

20/3

Bangladesh Bank Bangladesh bank ; officer ( general) - 27.04.2018 গণিত বিবিধ (Miscellaneous)

ব্যাখ্যা

0 569

best des

According to the question,

a = 10

b = 2

Then, a*b = ab/(a + b)

or, 10*2 = 10×2/(10 + 2)

or,10*2 = 20/12

or,10*2 = 5/3

5 years ago

0 0

Md Azizur Rahman

Founder of Satt

বিবিধ (Miscellaneous)

Edit

1. A farmer had 17 hens. All but 9 died. How many live hens were left?

Created: 6 years ago | Updated: 1 year ago

বিসিএস প্রিলিমিনারি + রিটেন টেস্ট ২৮ তম বিসিএস প্রিলিমিনারি টেস্ট (28-11-2008) গণিত বিবিধ (Miscellaneous)

ব্যাখ্যা Please wait...

1 1.8k

2. A clock loses ( falls behind ) 10 minutes each day. How many days will take to reach a point where the clock will indicate the correct time ?

Created: 6 years ago | Updated: 1 year ago

120

None of these

Bangladesh Bank Bangladesh Bank - Officer - 2001 গণিত বিবিধ (Miscellaneous)

ব্যাখ্যা Please wait...

1 1.3k

3. Eight telephone poles are each 15 feet apart. What is the distance, in feet, from the first to the last pole ?

Created: 6 years ago | Updated: 1 year ago

105

120

Bangladesh Bank Bangladesh Bank - Officer - 2001 গণিত বিবিধ (Miscellaneous)

ব্যাখ্যা Please wait...

2 641

4. If the total cost C= 1000 + 0.2s, where 's' is the sales volume, the variable cost on sales of TK. 1000 will be Taka

Created: 6 years ago | Updated: 3 years ago

500

400

300

200

100

Bangladesh Bank Bangladesh Bank - Assistant Director - 2006 গণিত বিবিধ (Miscellaneous)

ব্যাখ্যা Please wait...

0 680

5. If the operation ^ is defined by the equation x ^ y = 2x + y, what is the value of a in 2 ^ a = a ^ 3 ?

Created: 6 years ago | Updated: 3 years ago

-1

None of these

Bangladesh Bank Bangladesh Bank - Assistant Director - 2009 গণিত বিবিধ (Miscellaneous)

ব্যাখ্যা Please wait...

0 1k

If * is defined for all positive real numbers a and b by ab=ab/(a+b), then 102=?

বিবিধ (Miscellaneous)

Related Question

1. A farmer had 17 hens. All but 9 died. How many live hens were left?

2. A clock loses ( falls behind ) 10 minutes each day. How many days will take to reach a point where the clock will indicate the correct time ?

3. Eight telephone poles are each 15 feet apart. What is the distance, in feet, from the first to the last pole ?

4. If the total cost C= 1000 + 0.2s, where 's' is the sales volume, the variable cost on sales of TK. 1000 will be Taka

5. If the operation ^ is defined by the equation x ^ y = 2x + y, what is the value of a in 2 ^ a = a ^ 3 ?

Bangladesh Bank

Promotion

Download Our Mobile Apps

Satt policy

Main Features

Subscribe our newsletter

Job

If * is defined for all positive real numbers a and b by a*b=ab/(a+b), then 10*2=?

বিবিধ (Miscellaneous)

Related Question

1. A farmer had 17 hens. All but 9 died. How many live hens were left?

2. A clock loses ( falls behind ) 10 minutes each day. How many days will take to reach a point where the clock will indicate the correct time ?

3. Eight telephone poles are each 15 feet apart. What is the distance, in feet, from the first to the last pole ?

4. If the total cost C= 1000 + 0.2s, where 's' is the sales volume, the variable cost on sales of TK. 1000 will be Taka

5. If the operation ^ is defined by the equation x ^ y = 2x + y, what is the value of a in 2 ^ a = a ^ 3 ?

Bangladesh Bank

Promotion

Download Our Mobile Apps

Satt policy

Main Features

Subscribe our newsletter

If * is defined for all positive real numbers a and b by ab=ab/(a+b), then 102=?