Explanation:

The Khondokars are proud of their 'blue blood'. Correct Answer aristocracy Blue Blood আভিজাত্য aristocracy

Explanation:

50% of the people in an area read Ittefaq and 60% of the people in that area read Prothom Alo. 20% people read both the newspapers. What percent of people do not read any of the newspapers ? Correct Answer 10 Total = Ittefaq + Prothom Alo - Both + None = > 100% = 50% + 60% - 20% + None. So, None = 10%

Explanation:

The average of 100 observations in a study was calculated as 49.7 . Later it was revealed that one of the observations was misread as 64 instead of 94. What will be the correct average ? Correct Answer 50 The erroneous total of the obsevations = 49.7 x 100 = 4970 The correct total of the observations = 4970 - 64 + 94 = 5000 So, the correct average = 5000/100 = 50.

Explanation:

If 6 workers can complete 1 identical job in 3 days, how long (in days) will it take 4 workers to complete 10 such jobs ? Correct Answer 5 this question should be - If 6 workers can complete 9 identical jobs in 3 days, how long (in days) will it take 4 workers to complete 10 such jobs? Solution: 6 workers can complete 9 identical jobs in 3 days. ∴1 worker can complete 1 identical jobs in = (6 x 3)/9 days  ∴4 workers can complete 10 identical jobs in = (6 x 3 x 10) /(9 x4) days = 5days 4 workers can complete 10 jobs in 5 days. (ans)

Explanation:

A form sorting machine can sort 12 forms in 10 minutes. How many forms can it sort in one and half hours at this rate ? Correct Answer 108 One and half hours = 90 minutes The machine, in 10 minutes, can sort 12 forms So, it, in 90 minutes, can sort 12 x 90 / 10 = 108 forms

Explanation:

Farhana deposited TK.10,000 in a Bank at 13.25% interest rate compounded annually. At the end of the second year, the total amount including interest will become how much ? Correct Answer TK.12,826 C = P(1 + r/n)nt [C = principal with interest, P = principal, r = rate of interest, n = number of times interest is compounded per time period, t = number of time periods] Here, P = 10000 TK,  r = 13.25% , n = 1 , t = 2 C = 10000(1 + 13.25/100)1×2 = 10000 × 1.2826 = 12826 TK

Explanation:

Selim deposited a total of taka 120,000 in two savings accounts for one year. One account offered him 8% interest and the other 10% . If he earned taka 10,000 as interest, how much did he deposit at 8% ? Correct Answer TK. 100,000 Let the amount deposited at 8% and 10% interest be X and (120000 - X) respectively. Interest, I = P n r Now,  X × 1 × 8/100 + (120000 - X) × 1 × 10/100 = 10000 [total interest] 8X + 10(120000 - X) = 1000000 [multiplying both sides by 100] or, 8X + 1200000 - 10X = 1000000 or,  10X - 8X = 1200000 - 1000000 or,  2X = 200000 So,  X =   100,000 TK

Explanation:

If the purchasing price of 15 apples and selling price of 12 apples are the same then how much is the gain in percentage form ? Correct Answer 25% Purchasing price of each apple = 1/15  Selling price of each apple = 1/12 Gain percentage = (1/12 - 1/15) / (1/15) × 100% = (5 - 4)/60 / (1/15) × 100% = 1/60 × 15 × 100% = 25%

Explanation:

If the sum of (8, 5 and x ) is 21, then the average of (8, 5 and x ) is - Correct Answer 7 According to question, 8 + 5 + x = 21or, x = 21 - 13so, x = 8So, the average is =8+5+83 or 213 or 7.

Explanation:

Six years from now the combined age of father and son will be 54. If, currently , son is 5 times younger than his father then what is the present age of the father ? Correct Answer 35 Let the present age of son and his father be S and 5S respectively. Six years from now, their ages will be (S + 6) and (5S + 6) respectively. So,  S + 6  + 5S + 6 = 54 or,  6S + 12 = 54 or,  6S = 54 - 12 or,  6S = 42 or,  S = 42/6 = 7 So, present age of the father = 5 × 7 = 35 years

Explanation:

A bookseller can gain 6.666% if he offers a 20% commission on the written selling price of a book. If the commission is reduced to 10% , what will be his gain ? Correct Answer 20% Let the  actual and written price be A and S respectively. Selling price at 6.666% gain = A + 6.666% of A = 1.0666A Selling price at 20% commission or written price = S - 20% of S = S - 0.2S = 0.8S Selling price at 6.666% gain = Selling price at 20% commission on written price or,  1.066A = 0.8S or,  S = 1.066A/0.8 = 1.33325A Selling price at 10% commission = S - 10% of S = S - 0.1S = 0.9S So, gain at 10% commission on written price = (0.9S - A) / A x 100% = (0.9 ×1.33325A - A) / A × 100% = (1.2A - A) / A × 100% = 0.2 × 100% = 20%

Explanation:

A watermelon is divided into 18 equal pieces. If Naz takes 1/3 of the watermelon and Sarah takes 1/3 of the rest that are left, how many pieces are still left ? Correct Answer 8 Naz takes = 1/3 of 18 = 6 pieces Sarah takes = 1/3 of (18 - 6) = 1/3 of 12 = 4 pieces Number of pieces left = 18 - (6 + 4) = 18 - 10 =  8 pieces

Explanation:

Correct Sentences Correct Answer Rahul reads in an English medium school, so does his sister বাংলাদেশ - মায়ানমারের সীমান্তবর্তী নদী - নাফ নদী।

Explanation:

Roman covers 17 kilometer in 5 hours . How much time does he need to cover 10.2 kilometer ? Correct Answer 3 Hrs He can cover 17 km in 5 hrs So, He can cover 10.2 km in 5×10.2/17 hrs = 3 hrs

Explanation:

The ratio between the length and breadth of a field is 7:5. The perimeter of the field is 360 meter. What is the area of the field ? Correct Answer 7875 sq. meter Let the length and breadth be 7x and 5x meters respectively. Then, perimeter,  2(7x + 5x) = 360 or,  2×12x = 360 or,  24x = 360 or,  x = 360/24 = 15 Area = length×breadth =   7x × 5x = 35x2  = 35×152  = 35×225 =  7875 m2

Explanation:

Arif incurred a loss of 25% by selling a used mobile phone set at taka 1500. How much could he gain/lose by selling that 2200 taka ? Correct Answer 10% gain Let the original price be A. Then,  A - 25% of A = 1500 or,  A - 0.25A = 1500 or,  0.75A = 1500 or,  A = 1500/0.75 = 2000 TK Gain = (2200 - 2000)/2000 × 100% = 10%

Explanation:

What should be added with 15480 to make it exactly divisible by 14 ? Correct Answer 4 Here,  15480 ÷ 14 = 1105; remainder = 10 Number to be added = 14 - 10 = 4

Explanation:

NOXIOUS Correct Answer Deleterious Deleterious অর্থ যা কোন ক্ষতি করে। Noxious অর্থ বিষধর, ক্ষতিকর বা যা অসহনীয়।

Explanation:

Rumi and Rony can finish a task, working together, in 12 days. If Rony alone can finish that in 20 days, how many days will Rumi need to finish the task working alone ? Correct Answer 30 Together the can finish 1/12 of the work in a day. Rony alone can finish 1/20 of the work in a day. Rumi alone can finish = 1/12 - 1/20 = (5 - 3)/60 = 1/30 of the work in a day. So, Rumi alone can finish the work in 30 days.

Explanation:

The average age of 40 employees in a branch of a bank is 35 years . When a new employee joined the bank the average age increased to 35.5 years. What is the age of the new employee ? Correct Answer 55.5 Total age of 40 employees = 40×35 = 1400 years Total age of 41 employees = 41×35.5 = 1455.5 years Age of the new employee = 1455.5 - 1400 = 55.5 years

Explanation:

If x is an integer then which of the following must be odd ? Correct Answer 2x+3 Let, x=2then, 2x+3=2×2+3=7 which is odd