Page 56 - NUMINO Challenge_C2

Problem solving Key Points

1 Only one part of each person’s statement is true. Think of two
Find the rankings of A, B, and C. different cases:
B: A is 3rd and C is 1st. when A is 3rd or
C: A is 1st and B is 3rd. when C is 1st.
A: B is 3rd and C is 2nd.

2 Sean, Josh, Kate, and Beth are all in different Assume that
grades. Sean is in 2nd
grade and Josh is
Kate: Sean is in 2nd grade and Josh is in 3rd grade. not in 3rd grade.
Beth: Kate is in 4th grade and Josh is in 2nd grade.
Sean: Beth is in 2nd grade and Kate is in 3rd grade. Assume that
Josh: Beth is in 4th grade and Sean is in 1st grade. Sean is not in 2nd
grade and Josh is
If only one part of each person’s statement is in 3rd grade.
true, in what grade is Kate?

53Words and Logic