Answer :
The biggest number of children in the group is 7, using the concept of greatest common factor.
The problem we are dealing with is related to the greatest common factor, the Greatest Common Factor of two or more numbers is the greatest number among all the common components of the given numbers. The GCF of two common numbers x and y is the biggest possible number that separates both x and y without taking off any remainder. the components of both numbers can be listed, and at that point, it gets to be simple to check for the common variables. By marking the common variables, we can select the greatest one among all of them. we are given the total number of boys which is 28 and the total number of girls is 35 .For 28 =2 × 2 × 7 and 35 =5 × 7, from here we can see that 7 is the common greatest factor of both numbers 28 and 35.
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