Question
A student multiplied a number by 2/5 instead of 5/2.
What is the percentage error in the calculation?Solution
Let the required number = (LCM of denominator 2 and 5) = 10 According to the question, Wrong answer = 2/5 × 10 = 4 Correct answer = 5/2 × 10 = 25 Required percentage of error = (25-4)/25 × 100 = 84%
What is the position of J with respect to J’s wife?
Find the odd one out.
It is a popular misconception that nuclear fusion power is free of radioactivity; in fact the deuterium-tritium reaction that nuclear scientists are cur...
In a certain code language, 'COUNTRY' is written as ‘3-15-21-14-20-18-25 and ‘PEOPLE’ is written as 16-5-15-16-12-5. How will 'HIGHWAY' be written...
How many triangles are there in the given figure?
If 'A' means ' X ', 'B' means '-', 'C' means '÷', and 'D' means '+', then what is the value of the expression:
{34 A (20 C 5) B (14 D 5)}
Select the correct mirror image of the given figure when the mirror is placed to the right side of the f igure at ‘XY ’.
Statement: Â Most of those who study in premier engineering colleges in India migrate to developed nations for better prospects in their professional p...
If all the persons are arranged alphabetical order in Row 2, from the left end to the right end, then how many persons remain unchanged from their previ...
Earth , Planet, Mercury
