841 . A die is rolled and a coin is tossed What is the probability that a 3 will be rolled and a tail tossed?

A. 1/2
B. 1/6
C. 1/8
D. 1/12

View Answer	Favorite Question	Report

Answer: Option D

Explanation:

এখানে,একটি নিরপেক্ষ ছক্কার ৩ এবং মুদ্রার Tail আসে ১ বার (3T)

অতএব, অনুকূল ফলাফল = 1

এবং মোট ফলাফল = 12

অতএব, সম্ভব্যতা = 1/12

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

প্রবেশনারি অফিসার | 02-04-2022

📢 BdMerit অ্যাপে সরকারি চাকরি না হলে সম্পূর্ণ টাকা ফেরত!

BdMerit-এর ১ বছরের প্রিমিয়াম প্যাকেজ কিনে ১০ মাস নিয়মিত প্রস্তুতি নিন—

এর মধ্যে চাকরি না হলে- 🎁 BdMerit দিবে ১০০% ক্যাশব্যাক!

🚀 আজই ডাউনলোড করুন bdMerit-এর অ্যাপ▶️ এবং আপনার সাফল্যের পথ সুগম করুন!

842 . A discount electronics store normally sells all merchandise at a discount of 10 percent to 30 percent off the marked retail price. If during a special sale an additional 20 percent were to be deducted from the discount price; what would be the lowest possible price of an item marked retail price is Tk. 260?

A. Tk. 145.60
B. Tk. 165
C. Tk. 210
D. Tk. 182
E. None of these

View Answer	Favorite Question	Report

Answer: Option A

Explanation:

এই Math টিতে 'discount' এর উপর 'discount' হিসাব করতে হবে। যদি 30% off থাকে , তবে (100 - 30)  =  70% price এ বিক্রি হচ্ছে।
so 30% discount এর জন্য 260Tk হবে  =  260  ×  .70
                                         =  182 Tk.
আবার, এই discount price এর উপর 20% discount  =  182  ×  .80
                                                       =  145.60 টাকা

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

843 . A discount series 10%, 15% and 20% is equal to a single discound of :

A. 38.8%
B. 61.2%
C. 76.5%
D. 23.5%

View Answer	Favorite Question	Report

Answer: Option A

Explanation:

the single equivalent discount can be calculated as: 1 - (1 - d1) × (1 - d2) × (1 - d3), where d1, d2, d3 are the discounts. Therefore, the single discount equivalent to the successive discounts of 10%, 15%, and 20% is 38.8% or 0.388

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

তিতাস গ্যাস ট্রান্সমিশন এন্ড ডিষ্ট্রিবিউশন কোম্পানী লি. | সহকারী ব্যবস্থাপক (অ্যাকাউন্টস) | ২৭.০৪.২০১৮

A. 25%
B. 16.67%
C. 8.33%
D. 6%

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

প্রশ্নে বলা হচ্ছে যে, 45 টাকা কেজি দরের 2 কেজি Vegetable ঘি'র সাথে 70 টাকা কেজি দরের 3 কেজি Standard ঘি'র সাথে Mix করে তা 65 টাকা কেজি দরে বিক্রয় করা হলো । শতকরা লাভের পরিমাণ কত ?
2 কেজি Vegetable ঘি'র ক্রয়মূল্য = 2 × 45 = 90 টাকা
আবার, 3 কেজি Standard ঘি'র ক্রয়মূল্য = 3 × 70 = 210 টাকা
(2 + 3) = 5 কেজি ঘি'র মোট ক্রয়মূল্য = 90 + 210 = 300 টাকা
আবার, 5 কেজি ঘি'র বিক্রয়মূল্য = 5 × 65 = 325 টাকা
লাভ হয় = (325−300300 × 100) = (25300 × 100) = 8.33%

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

845 . A does a work in 10 days and B does the same work in 15 days. In how many days they together will do the same work?

A. 5 days
B. 6 days
C. 8 days
D. 9 days

View Answer	Favorite Question	Report

Answer: Option B

Explanation:

Hints: A and B in 1 day together work ( 1/10 + 1/15) portion = (3 + 2)/30 = 5/30 = 1/6

Together they finish in 6 days.

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

846 . A drink contains 20% cranberry juice, 20% raspberry juice and the rest is apple juice. You added 250 ml water in 750 ml of the drink. Now, what is the ratio of water of water to apple juice in the drink?

A. 6:5
B. 9:5
C. 5:12
D. 5:9
E. None of these

View Answer	Favorite Question	Report

Answer: Option D

Explanation:

60% of 750 = 0.6× 750 = 450

Now, 250 : 450 = 5 : 9

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

847 . A driver of an auto rickshaw sees a lorry m ahead of him .After 30 seconds the lorry 90 m behind. If the speed of the auto rickshaw is 38 km /hr, then what is the speed of the lorry?

A. 23 km/hr
B. 25 km /hr
C. 20 km /hr
D. 18 km /hr

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

জনতা ও রূপালী ব্যাংক- অফিসার ১৩.১২.২০১৯

A. 1/2
B. 1/3
C. 1/4
D. 1/8

View Answer	Favorite Question	Report

Answer: Option D

Explanation:

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

প্রবাসী কল্যাণ ব্যাংক-সিনিয়র অফিসার-09-10-2021

A. 3/4
B. 1/2
C. 1/8
D. 1/16
E. 1/32

View Answer	Favorite Question	Report

Answer: Option B

Explanation:

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

Bangladesh Bank - Officer(Cash) - 2011

A. 2/3
B. 3/4
C. 5/6
D. 1/6

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

Let's break it down:

Number of favorable outcomes (odd numbers): There are three odd numbers on a six-sided dice, which are 1, 3, and 5.

Number of favorable outcomes (numbers less than 4): There are three numbers less than 4 on a six-sided dice, which are 1, 2, and 3.

However, we need to be careful not to count the number 1 twice since it satisfies both conditions (odd and less than 4).

So, the total number of favorable outcomes is 3 + 2 - 1 = 4.

Total number of possible outcomes: Since we are rolling a fair six-sided dice, there are six possible outcomes (numbers 1 to 6).

Now, we can calculate the probability:

Probability = (Number of favorable outcomes) / (Total number of possible outcomes) Probability = 4 / 6 Probability = 2 / 3

Therefore, the probability of getting an odd number or a number less than 4 when rolling a fair six-sided dice is 2/3

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

851 . A family had dinner in a restaurant and paid $30 for food. They also had to pay 9.5% sale tax and 10% for the tip. How much did the pay for the dinner?

A. $35.85
B. $33.60
C. $35.45
D. $36.55
E. $36.35

View Answer	Favorite Question	Report

Answer: Option A

Explanation:

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

Bangladesh Bank - Officer(Cash) - 2011

A. 100
B. 104
C. 108
D. 120
E. None of these

View Answer	Favorite Question	Report

Answer: Option B

Explanation:

Lets see if he needed 5 poles at each side
Similarly, no. of poles  =  27  ×  2  +  25  ×  2  =  104

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

853 . A farmer had 20 hens. All but 2 died. How many hens are still alive?

A. 2
B. 10
C. 15
D. 18

View Answer	Favorite Question	Report

Answer: Option A

Explanation:

All but 2 died means only 2 survived.

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

854 . A farmer had 20 hens. All but 2 died . How many hens are still alive ?

A. 2
B. 10
C. 15
D. 18

View Answer	Favorite Question	Report

Answer: Option A

Explanation:

All but 2 died means only 2 survived.

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

Bangladesh Bank - Assistant Director - 2009

A. 2K
B. 6K
C. 7K
D. 8K

View Answer	Favorite Question	Report

Answer: Option D

Explanation:

Let the length and width of the smaller field be L and W respectively.

So, area of the smaller field, K = L×W

Now, area of the larger field = 2L×4W = 8 L×W = 8K

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

841 . A die is rolled and a coin is tossed What is the probability that a 3 will be rolled and a tail tossed?

BdMerit-এর ১ বছরের প্রিমিয়াম প্যাকেজ কিনে ১০ মাস নিয়মিত প্রস্তুতি নিন—

এর মধ্যে চাকরি না হলে- 🎁 BdMerit দিবে ১০০% ক্যাশব্যাক!

🚀 আজই ডাউনলোড করুন bdMerit-এর অ্যাপ▶️ এবং আপনার সাফল্যের পথ সুগম করুন!

843 . A discount series 10%, 15% and 20% is equal to a single discound of :

844 . A dishonest trader mixes 2 kg of vegetable ghee costing Tk. 45 a kg with 3 kg of standard ghee costing Tk. 70 per kg. He sells the mixed ghee at Tk. 65 per kg. what is his percentage of profit?

845 . A does a work in 10 days and B does the same work in 15 days. In how many days they together will do the same work?

846 . A drink contains 20% cranberry juice, 20% raspberry juice and the rest is apple juice. You added 250 ml water in 750 ml of the drink. Now, what is the ratio of water of water to apple juice in the drink?

847 . A driver of an auto rickshaw sees a lorry m ahead of him .After 30 seconds the lorry 90 m behind. If the speed of the auto rickshaw is 38 km /hr, then what is the speed of the lorry?

848 . A fair coin is flipped three times. What is the probality that coin lands head each time?

849 . A fair coin is thrown in the air four times. If the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss ?

850 . A fair six-sided dice is rolled. Find the probability of getting an odd number or a number less then 4 -

851 . A family had dinner in a restaurant and paid $30 for food. They also had to pay 9.5% sale tax and 10% for the tip. How much did the pay for the dinner?

852 . A farmer built a fence around around his square plot. He used 27 fence poles on each side of the square. How many poles did he need altogether?

853 . A farmer had 20 hens. All but 2 died. How many hens are still alive?

854 . A farmer had 20 hens. All but 2 died . How many hens are still alive ?

855 . A farmer has two rectangular fields. The larger field has twice the length and four times the width of the smaller field. If the area of the smaller field is K units, what is the area of the larger field?

কোর্স ক্যাটাগরি

প্রয়োজনীয় লিঙ্ক