Question

a number is thrift if it is multiple of 2 or 3 how many thrift are there between-15 and 15?
Two sets of 4 consecutive positive integers have exactly one integer in common. The sum of the integers in the set with greater numbers is how much greater than the sum of the integers in the other set?

Answer 1

1. Thrifts are 0,6,-6,12,-12.
2. Obviously, the largest number of the smaller set (i.e. the set with smaller integers) and the smallest number of the larger set (i.e. the set with smaller integers) will be equal. Therefore the required answer will be 12.

Answer 2

right answer is 19