ক) Coconut milk and egg of the same cholesterol count খ) There is no cholesterol in all three গ) Coconut milk has less cholesterol than egg ঘ) Egg and butter are of the same cholesterol count

Analytical:(Q1-Q5): Exactly 5 persons J,K,L,M and O have gathered to play a game. In each round of the game, exactly 3 of these persons must play. The following are the other conditions of play. No person can play in three consecutive rounds. No person can sit out two consecutive rounds. (Q.5). Medical research has clamed a very high association between smoking and lung cancer. Yet we see many smokers showing no signs of lung cancer. On the other, many victims of lung cancer had never smoked. From the above statement we can conclude that.

ক) The research finding are inconsistent than active smoking. খ) Passive smoking is more dangerous than active smoking গ) A victim of lung cancer should never smoke ঘ) Smoking may not be the only cause of lung cancer

If 4x+3y=-2 and 3x+6=0, what is the value of y?

ক) -3(1/3) খ) -2 গ) -(2/3) ঘ) 2/3

ব্যাখ্যা (Explanation)

here,

3x+6=0 or,3x=-6 or,x =-6/3 = -2 so, 4x+3y= -2 or,y= (-2-4x)/ 3 = (-2+8)/3 = 2 so,y=2

If x+5=4x-10, then x=?

ক) -15 খ) -5 গ) -3 ঘ) 3

ব্যাখ্যা (Explanation)

x+5=4x-10 x-4x=-10-5 or,-3x=-15 or, x =5 so, x= 5

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অ্যাপ ইন্সটল করুন

If (x-1)² = 400, which of the following could be the value of x-5?

ক) 15 খ) 14 গ) -24 ঘ) -25

ব্যাখ্যা (Explanation)

here, (x - 1)2 = 400

√(x - 1)^2 = √400

This gives us: |x – 1| = 20 Because there is an expression inside the absolute value sign, we must consider that the entire expression, and not just the variable, can be either positive or negative. We’ll need to solve the equation twice.

Solve for x-1 as positive:

|x – 1| = 20

x – 1 = 20

x = 21

Solve for x-1 as negative: |x – 1| = 20 or,-(x – 1) = 20 or,-x + 1 = 20 or,-x =19 or,x = -19 Thus, x – 5 can equal either 21 – 5 = 16 or -19 – 5 = -24.

A certain bakery has 6 employees. It pays annual salaries of Tk. 14,000 to each of 2 employees, Tk. 16,000 to 1 employee, and Tk. 17,000 to each of the remaining 3 employees. The average (arithmetic mean) annual salary of these employees is close to which of the following?

ক) Tk. 15,200 খ) Tk. 15,500 গ) Tk. 15,800 ঘ) Tk. 16,000

Lucy invested Tk. 10,000 in a new mutual fund account exactly three years ago. The value of the account increased by 10 percent by 10 percent during the first year, increased by 5 percent during the second year, and decreased by 10 percent during the third year. What is the value of the account today?

ক) Tk. 10,350 খ) Tk. 10,395 গ) Tk. 10,500 ঘ) Tk. 11,500

ব্যাখ্যা (Explanation)

1st year’s increase of 10% can be expressed as 1.10; 2nd year’s increase of 5% percent can be expressed as 1.05 ; 3rd year’s decrease of 10 percent can be expressed as 0.90 . Multiply the original value of the account by each of these yearly changes= 10,000(1.10)(1.05)(0.90) = 10,395

The arithmetic mean and standard deviation of a certain normal distribution are 5 and 5 respectively. What value is exactly 2 standard deviations less than the mean?

ক) 10.5 খ) 11.0 গ) 11.5 ঘ) 12.0

A Tk. 500 investment and a Tk. 1,500 investment have a combined yearly return of 5 percent of the total of the investments. If the Tk. 500 investment has a yearly return of 7 percent yearly return does the Tk. 1,500 investment have?

ক) 9% খ) 10% গ) 10(5/8)% ঘ) 10%

ব্যাখ্যা (Explanation)

total investment = 500+1500=2000 tk 8.5 percent of the total of the investments = (8.5 / 2000) X 100 =170 at 7 percent , annual return of 500 tk = 35 tk renains= 170-35=135 tk so, percent of yearly return of 1500 tk is = (135/1500) X 100 = 9%

If a and b are prime numbers, such that a>b, which of the following can not be true?

ক) a+b is positive খ) ab is odd গ) a(a-b) is odd ঘ) a-b is prime

An overnight courier service charges Tk. 00 for the first 2 ounces of a package and Tk. 75 for each additional ounce. If there is a 6% sales tax added to these charges, how much does it cost to send a 6-ounce package?

ক) Tk. 4.24 খ) Tk. 8.00 গ) Tk. 8.48 ঘ) Tk. 9.28

Alam spends 20% of her income on taxes and 20% of the remainder on rent. What percent of his income does he spend on rent?

ক) 8% খ) 10% গ) 16% ঘ) 20%

ব্যাখ্যা (Explanation)

Suppose, Alams income 100 tk if he spends 20% of his income on taxes means , he spend 20 tk on tax 20% of remainder = 20/100 X 80 = 16 tk on rent so, 16 percent of his income he spends on rent

A television salesman makes a profit of 25% on all sales. How many televisions will he have to sell for Tk. Tk. 32,500 each to make a profit of at least 20,000?

ক) 3 খ) 4 গ) 6 ঘ) 8

There are 240 doctors and nurses at a hospital. If the ratio of doctors to nurses is 5 to 7, how many nurses are at the hospital?

ক) 20 খ) 60 গ) 100 ঘ) 140

ব্যাখ্যা (Explanation)

Let number of doctors= 5x and number of nurses = 7x Total number of doctors and nurses = 240 5x+7x = 240 =>12x =240 => x =20 Number of nurses =7x =7X20 = 140

এই টপিকের সব প্রশ্ন ব্যাখ্যাসহ, ভুল-সঠিক-বুকমার্ক আলাদা করে রিভিশন — অ্যাপে।

অ্যাপ ইন্সটল করুন

A company bought a total of 60 computers and 20 printers to modernize billing operations. If the price of each computer was three times the price of each printer, what percent of the total cost of the purchase was the total cost of the printers?

ক) 10% খ) 11% গ) 15% ঘ) 20%

ব্যাখ্যা (Explanation)

Supose, price of printer =X price of computer = 3X TOTAL COST =( 3X)60+(X)20 = 180 X+20 X = 200X COST OF ONE EACH = 3X+X = 4X PERCENTAGE = 4X/200X = 1/50 *100 = 2%

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