Question
Find the maximum value of (x + y) if 7x52y4 is divisible
by 12.Solution
ATQ, A number is divisible by 12 if it is divisible by both 3 and 4. A number is divisible by 4 when last two digits of the number are divisible by 4. y4 is divisible by 4 when y = 0, 2, 4, 6 or 8. Since we have to find maximum value, so y = 8. A number is divisible by 3 when sum of its digits is divisible by 3. So, (7 + x + 5 + 2 + 8 + 4) = (26 + x) must be divisible by 3. So, x = 1, 4 or 7. Since we have to find maximum value, so x = 7. Therefore, required value = 7 + 8 = 15.
The soils are called saline soils which have:
Match list I with list II
A silent mutation causes
Poor man’s meat is:
Which type of microorganism is the causative agent of coccidiosis, a disease that leads to symptoms like diarrhea, unthriftiness, or even death in fowl?...
In which type of epithelial tissue the absorption and secretion occur, as in the inner lining of the intestine?
During germination radical and plumule develop from?
The cytoplasmic inheritance shows which type of differences?
An SI engine sometimes continues to run for a very small period even after the ignition is switched off. This phenomenon is called:
Red delicious is the variety of which fruit?
Relevant for Exams:
