If 2x=3y=6−z2^x=3^y=6^{-z}2x=3y=6−z , find the value of 1x+1y+1z\frac{1}{x}+\frac{1}{y}+\frac{1}{z}x1 +y1 +z1

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If $2^x=3^y=6^{-z}$ , find the value of $\frac{1}{x}+\frac{1}{y}+\frac{1}{z}$

A-1

উত্তর : D.

ভেরিফাইড

শেয়ার :

সম্পর্কিত প্রশ্ন সমূহ

১.

What is the angle between the hour and minute hands of a clock at 14:50?

A135°

B140°

C145°

D150°

২.

The average of a non-zero number and its square is 5 times the number. The number is-

B17

C29

Dnone of these

৩.

How many terms of the arithmetic progression 2,7,12,... should be taken so that their sum equals 354?

A10

B11

C12

D13

৪.

In a simultaneous throw of a pair of dice, what is the probability of getting a total more than 8?

$\frac{5}{18}$

$\frac{13}{18}$

$\frac{1}{4}$

$\frac{7}{18}$

৫.

The H.C.F. of two number is 11 and their L.C.M. is 693. If one of the numbers is 77, find the other.

A99

B89

C79

D69

৬.

Silver is 17 times as heavy as water and copper is 7 times as heavy as water. In what ratio should these be mixed to get alloy 13 times as heavy as water?

1 : 1

2 : 3

1 : 2

3 : 2

৭.

The average of six numbers is 30. If the average of first four is 25 and that of last three is 35, the fourth number is:

A30

B28

C25

D20

৮.

A sum of TK. 600 amounts to TK. 720 in 4 years at simple interest. What will it amount to if the rate of interest is increased by 2%?

A750

B768

C800

D550

৯.

In a mixture, the ratio of the milk and water is 6:5. When 22 liter mixture is replaced by water, the ratio becomes 9:13. What is the quantity of water after replacement?

A62 liter

B50 liter

C40 liter

D52 liter

১০.

Person 1 to 4 receive equal shares of an income, while Person 5 receives half of what each of Persons 1 to 4 receives. If the total Income is 18000 taka, how much does Person 5 get?

A1500

B2000

C2500

D3000