DRUG CLASS AND MECHANISM: Rosuvastatin is an oral drug for lowering blood cholesterol levels. It belongs to a class of drugs called HMG-CoA reductase inhibitors, more commonly referred to as  statins ..RUG CLASS AND MECHANISM: Rosuvastatin is an oral drug for lowering blood cholesterol levels. It belongs to a class of drugs called HMG-CoA reductase inhibitors, more commonly referred to as  statins ..
Zero is an even number, because it is divisible by 2 with no remainder. 0 is neither positive nor negative. By most definitions 0 is a natural number, and then the only natural number not to be positive. Zero is a number which quantifies a count or an amount of null size. In most cultures, 0 was identified before the idea of negative things, or quantities less than zero, was accepted. The value, or number, zero is not the same as the digit zero, used in numeral systems using positional notation.
Natural number can have or cannot have zero but zero may be considered as a Whole Number, a rational, real, an algebraic and also a Complex Number. If we want to calculate the number of zero in the given number then simply count zeros. We can write one crore as 107. Exponent in 107 is 7 which means that there are 7 zeros in one crore. Another method to write total number of zeros in one crore is to multiply 10 seven times. That is (10 * 10 * 10 * 10 * 10 * 10 * 10) which gives 10000000. Thus total number of zeros in one crore is 7 (seven). Various operations such as multiplication, subtraction, addition can be applied on zero.