Question

cards numbered from 5 to 50 are placed in a box if one card is randomly selected find the probability of that card first prime number less than 10 second perfect square number 3rd perfect cube number 4th divisible by 7​

Answer 1

Answer:

In early production, first calcium cyanamide was converted into dicyandiamide, which was heated above its melting temperature to produce melamine. Today most industrial manufacturers use urea in the following reaction to produce melamine: 6 (NH2)2CO → C3H6N6 + 6 NH3 + 3 CO.