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.
A treaty signed by which of the following two countries for transfer of each other’s sentenced prisoners has come into effect with the ratification o...
Who is the Author of the book "Droupadi Murmu: From Tribal Hinterlands to Raisina Hills"?
Navegaon National Park is located in which state?
ध्वनि प्रदूषण को मापने की इकाई है ?
The 14th Dalai Lama resides in _____.
The Provision for Corporate Social Responsibility (CSR) is in:
Recently Indian navy decommissioned two of its warships. One is INS Nirbhik, another is:
The perpetuity payment is the interest earned by the present value of the perpetuity in one interest period.
Who is the supreme authority of the India?
In which state of India the Chief Minister has launched the “Mahtari Nyay Rath” for the awareness of women’s rights?
