Question
If 45780x52 is divisible by 72, then find the sum of all
possible values of 'x'.Solution
72 = 8 X 9 So, the given number must be divisible by both 8 and 9. If the given number is divisible by 8, then x52 is divisible by 8 So, possible values of 'x' are 1, 3, 5 and 7. If the given number is divisible by 9, then sum of the digits must be divisible by 9, So, 4 + 5 + 7 + 8 + 0 + x + 5 + 2 = (31 + x) must be divisible by 9 So, only possible value of x is 5 So, required sum = 5
Which disease is caused by a virus?
A coin is placed at the bottom of a tank filled with water (n = 4/3) to a depth of 12 cm. How much shall the coin appear raised?
Which of the following organelles is NOT bound by a membrane?
The primary reason that smoking cigarettes is bad for our health is that cigarette smoke _______.
Which of the following processes is responsible for the rusting of iron?
An object is placed at a distance of 10 cm in front of a double convex lens made of glass of refractive index 1.5. Both the radii of curvature of the l...
Which of the following is not a characteristic of prokaryotic cells?
What is used in cloud seeding to produce artificial rain?
Calculate the work done when a force of 10 N moves an object 5 m at 60° angle to direction of force.
The position, relative size and nature of the image formed by a concave lens for an object placed at infinity are respectively
Relevant for Exams:
