Explanation:

The first muslim conqueror of Bengal, Ikhtiyar Uddin Muhammad bin Bakhtiyar Khilji was a - Correct Answer Turk Ikhtiyār al - Dīn Muḥammad Bakhtiyār Khalzi popularly known as Bakhtiyar Khalji was a Turko - Afghan military general who led the Muslim conquests of the eastern Indian regions of Bengal and Bihar and established himself as their ruler.

Explanation:

The area of a rectangle is 200 sq. meter . If the length is twice the breadth , what is the perimeter of the rectangle ? Correct Answer 60 Let L be the length and B be the breadth. So, L x B = 200 or, 2B x B = 200 or, B2 = 100 or, B = 10 So, L = 2B = 2 x 10 = 20 Therefore, the perimeter of the rectangle = 2 (L + B) = 2 (20 + 10) = 2 x 30 = 60.

Explanation:

How much interest will TK. 2000 earn at an annual rate of 10% in one year if the interest is compounded every 6 months ? Correct Answer None of these 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 = 2000, r = 10% = 10/100 = 0.1, n = 2, t = 1 So, interest, I = C - P = 2000(1 + 0.1/2)2x1  - 2000 = 2000x1.052  - 2000 =  205 TK

Explanation:

A company makes a profit of 5% in its first TK. 1000 of sales each day , and 4% on all sales in excess of TK. 1000 for that day . What would be the profit of the company in day when sales are TK. 6000 ? Correct Answer 250 Profit for first 1000 TK sales = 5% of 1000 = 5/100 of 1000 = 50 TK Profit for Excess (6000 - 1000 = 5000) TK sales = 4% of 5000 = 4/100 of 5000 = 200 TK Total profit = 50 + 200 = 250 TK

Explanation:

The monthly salary of a person is increased by 10% in one month, but is decreased by 10% in the next month . What is the age of their father ? Correct Answer None of these the quesion is wrong. it should be -   The monthly salary of a person is increased by 10% in one month, but is decreased by 10% in the next month. What's the percentage change in his salary?   Solution: Let the initial salary be 100 tk. Increase by 10% will imply = 100 + 100x10/100 = (100 + 10) = 110 tk. Decrease by 10% will mean = 90% of 110 = 99 Hence the effective change is a decrease by = (100 - 99)% = 1%. (ans)

Explanation:

Average age of three brothers is 16 years . Average age of these brothers along with their father is 25 years. What is the age of their father ? Correct Answer 52 Total age of the three brothers = 3 x 16 = 48 years Total age of the brothers along with their father = 4 x 25 = 100 So, age of the father = 100 - 48 = 52 years

Explanation:

With 12.50% simple interest rate how many years are needed for a principal to get double ? Correct Answer 8 Principal with simple interest, A = P(1 + n r) or,  2P = P(1 + n x 12.5/100) or,  2P/P = 1 + n x 12.5/100  or,  n x 12.5/100 = 2 - 1 or,  n x 12.5/100 = 1 or,  n = 1 x 100 / 12.5 =  8 years

Explanation:

The compund interest at 10% per annum on a certain amount of money for two years is TK. 10.50. Then what is the principal amount in TaKa ? Correct Answer 50 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, r = 10% = 10/100 = 0.1, n = 1, t = 2 Interest, I = C - P =  P(1 + r/n)nt  - P = P{(1 + r/n)nt  - 1} =  P{(1 + 0.1)1x2  - 1} = 0.21P So, 0.21P = 10.5 or, P = 10.5/0.21 = 50 TK

Explanation:

Perimeter of rectangle is 200 meter. Its width is 3/7 of its length . What is the length in meter ? Correct Answer 70 In case of a rectangle, 2(Length + Width) = perimeter or, 2(Length + 3/7 of Length) = 200 or, 10/7 of Length = 200/2 So, Length = 200/2 x 7/10 = 70 meter

Explanation:

If a number of divisible by 102, then it is also divisible by : Correct Answer 2 102 is a even number. Every even number is divisible by 2. So, easily the answer is 2.

Explanation:

The world's oldest known city is - Correct Answer Rome Rome is the capital city and a special comune of Italy, as well as the capital of the Lazio region. The city has been a major human settlement for almost three millennia. With 2,860,009 residents in 1,285 km², it is also the country's most populated comune.

Explanation:

What is the most common of all the metal in the earth's crust ? Correct Answer Aluminum Aluminum is the most abundant metallic element in Earth's crust and the most widely used nonferrous metal. Because of its chemical activity, aluminum never occurs in the metallic form in nature, but its compounds are present to a greater or lesser extent in almost all rocks, vegetation, and animals.