Which of the following statements is true?
AA number is divisible by 3, if the product of its digits is divisible by 3.
BIf a number exactly divides the sum of two numbers, it must exactly divide the two numbers separately.
CA number is divisible by 6, if it is divisible by both 2 and 3.
DA number is divisible by 11 if difference between the sum of odd place digits and product of even place digits is either zero or divisible by 11.
Two numbers are in the ratio 5 : 3. If 10 is subtracted from both the numbers, their ratio changes to 5 : 7. The sum of numbers initially was ______.
If 3/20 of a number is 15 less than the 1/5 of the same number, then find the number.
I do not understand .