OTS (Open Testing Service) · Khuddam-ul-Hujjaj/ Nazims for Hajj (OTS 2027 - Includes All NTS Past Papers)
Most Repeated GK MCQs from Past Papers MCQs with Answers & Explanations (Page 155)
Practice verified Most Repeated GK MCQs from Past Papers MCQs with Answers & Explanations for Khuddam-ul-Hujjaj/ Nazims for Hajj (OTS 2027 - Includes All NTS Past Papers) preparation. Featuring solved questions, detailed explanations, and past paper answers (Page 155).
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Solved Questions
3653 Questions
3081
In a town, 45% population read magazine A, 55% read magazine B, 40% read magazine C, 30% read magazines A and B, 15% read magazines B and C, 25% read magazines A and C; and 10% read all the three magazines. What percentage do not read any magazine?
Correct Option
Option C
Explanation
By inclusion - exclusion: 45+55+40 − (30+15+25) +10 = 80% read at least one magazine, so 20% read none.
3082
The value of a machine depreciates at the rate of 10% per annum. What will be its value 2 years hence, if the present value is Rs 100000? Also, find the total depreciation during this period.
Correct Option
Option C
Explanation
After two years at 10% depreciation per year the value is 100000×0.9² = 81000, so the machine's value will be 81000.
3083
If x% of y is 100 and y% of z is 200 then this relation between x and z
Correct Option
Option A
Explanation
From (x/100)·y =100 we get y=10000/x, and from (y/100)·z =200 we get z=20000/y, so substituting yields z=2x.
3084
If A.P is -15,-22,-29,..... then 11th term
Correct Option
Option A
Explanation
Common difference is −7, so the 11th term is −15 +10(−7) = −85, giving −85.
3085
If amna is x years old then 5 times amna's age three years ago is
Correct Option
Option B
Explanation
Three years ago Amna was x-3 years old, so five times that age is 5(x-3).
3086
If q=5r-s ,than what is the value of r in terms of q and s?
Correct Option
Option B
Explanation
From q = 5r - s rearrange to 5r = q + s and divide by 5 to get r = (q+s)/5.
3087
(8x^2 + 5x - 7) + (3x^2 - 7x - 9)?
Correct Option
Option C
Explanation
Add like terms: (8x^2+3x^2)=11X^2, (5x-7x)=-2X, (-7-9)=-16, giving 11X^2-2X-16.
3088
To gain 10% on selling a sample of milk at the cost price of pure milk the quantity of water to be mixed with 50 kg of pure milk is
Correct Option
Option B
Explanation
To gain 10% with 50 kg milk you add water = 50*(10/100) = 5 kg, so 5 kg is required.
3089
The difference between a two-digit number and the number obtained by interchanging the position of its digits is 36. what is the difference between the two digits of that number?
Correct Option
Option A
Explanation
The difference between the numbers equals 9 times the digit difference, so 9·d = 36 ⇒ d = 4, hence 4.
3090
The value of log2 16 is
Correct Option
Option B
Explanation
Because 2^4 = 16, the value of log2 16 is 4.
3091
If the selling price of 40 articles is equal to the cost price of 50 articles, the loss or gain percentage is
Correct Option
Option C
Explanation
Equating total SP of 40 items to total CP of 50 items and solving for unit prices shows a resulting gain of 20%, so 20% gain fits.
3092
The three geometric means between 2 and 31 are
Correct Option
Option B
Explanation
Starting from 2 with common ratio 2 gives 4, 8, 16 as the three geometric means (2,4,8,16 is a geometric progression).
3093
A and B enter into a partnership with respective capitals of rs 20,000 and rs 40,000. At the end of the year, the total profit s rs 33,000. if A receives rs 15, 000 as both his salary and profit, then what is his salary?
Correct Option
Option C
Explanation
A's profit share by capital ratio 20,000:40,000 = 1:2 is one-third of 33,000 = 11,000, so his salary = 15,000 − 11,000 = 4,000.
3094
The 3rd proportional to 18 and 54 is?
Correct Option
Option A
Explanation
18:54 = 1:3, so the third proportional is 54 × 3 = 162.
3095
A machine depreciates at the rate of 10% of its value at the beginning of a year. If the present value of a machine is rs 4000, find its value after 3 years.
Correct Option
Option A
Explanation
With 10% depreciation per year the value = 4000×(0.9)^3 = 4000×0.729 = 2916.
3096
1/5 part of an amount was given at 3% interest, 1/3 part was given at 5% simple interest 2/5 part at 9% simple interest, and the remaining part at 11% simple interest. The total interest received was Rs 297. How much amount was originally given?
Correct Option
Option B
Explanation
The weighted interest rate is (1/5·3 + 1/3·5 + 2/5·9 + 1/15·11) = 6.6%, so the principal = 297 ÷ 0.066 = 4500.
3097
If the equation X^2+Y^2=14XY,then log[k(X+Y)]=1/2(logX+logY) for some constant k, find the value of k?
Correct Option
Option A
Explanation
Using logs: 1/2(log X+log Y)=log(√(XY)), so k(X+Y)=√(XY); with X^2+Y^2=14XY we get (X+Y)^2=16XY so X+Y=4√(XY), giving k=√(XY)/(X+Y)=1/4.
3098
When a number is added in its square the resulting number is 6. What is the number
Correct Option
Option B
Explanation
Let the number be n: n^2+n=6 ⇒ n^2+n-6=(n-2)(n+3)=0, so the relevant solution from the options is 2.
3099
In Marathon race, 70% of the competitors are female. If the number of male athletes is 45. How many females athletes participated on the marathon?
Correct Option
Option C
Explanation
If males are 30% and equal 45, total competitors =45/0.30=150, so females are 70% of 150 =105.
3100
Simplify the equation(-4t^2)(1/4 t^2)(-9t^4)
Correct Option
Option B
Explanation
Multiply coefficients and add exponents: (-4)(1/4)(-9)=9 and t^2·t^2·t^4=t^8, so the product is 9t^8.
