A. 8 kmph
B. 4 kmph
C. 2 kmph
D. 10 kmph
✅ The correct answer is option B. 4 kmph.
Mathematics MCQs
The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 12000 and the average salary of the rest is Rs. 6000. The total number of workers in the workshop is__________________?
A. 20
B. 21
C. 22
D. 23
✅ The correct answer is option B. 21.
The largest size of bamboo that can be placed in a square of area 100 sq.meters is__________?
A. 10m
B. 14.14m
C. 20m
D. 25m
✅ The correct answer is option B. 14.14m.
The perimeter of a triangle is 81 cm. If the sides are in the ratio 4:3:2, find the length of the largest side.
A. 45 cm
B. 40 cm
C. 36 cm
D. 27 cm
✅ The correct answer is option C. 36 cm.
Let the three sides be 4x,3x and 2x. 4x+3x+2x = 81 9x = 81 x = 9 Length of the largest side
Let the three sides be 4x,3x and 2x. 4x+3x+2x = 81 9x = 81 x = 9 Length of the largest side
= 4x = 36 cm
Find the area of trapezium whose parallel sides are 20 cm and 18 cm long, and the distance between them is 15 cm.
A. 225 cm2
B. 275 cm2
C. 285 cm2
D. 315 cm2
✅ The correct answer is option C. 285 cm2.
Area of a trapezium = 1/2 (sum of parallel sides) * (perpendicular distance between them) = 1/2 (20 + 18) * (15) = 285 cm2
Area of a trapezium = 1/2 (sum of parallel sides) * (perpendicular distance between them) = 1/2 (20 + 18) * (15) = 285 cm2
The probability that a number selected at random from the first 50 natural numbers is a composite number is__________?
A. 21/25
B. 17/25
C. 4/25
D. 8/25
✅ The correct answer is option B. 17/25.
The number of permutations of the letters of the word ‘MESMERISE’ is___________?
A. 9!/(2!)2 3!
B. 9!/(2!)3 3!
C. 9!/(2!)2 (3!)2
D. 5!/(2!)2 3!
✅ The correct answer is option A. 9!/(2!)2 3!.
A trader lists his articles 20% above C.P and allows a discount of 10% on cash payment. His gain percent is:
A. 10%
B. 8%
C. 5%
D. 6%
✅ The correct answer is option B. 8%.
A man can row a boat at 20 kmph in still water. If the speed of the stream is 6 kmph, what is the time taken to row a distance of 60 km downstream?
A. 20/6 hours
B. 27/2 hours
C. 30 hours
D. 30/13 hours
✅ The correct answer is option D. 30/13 hours.
If the numerator of a fraction is increased by 250 % and the denominator is increased by 400 % the resultant fraction is 7/19. What is the original fraction?
A. 10/19
B. 5/9
C. 9/5
D. 19/7
✅ The correct answer is option A. 10/19.