Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.
How many two-digit numbers exist?
90
100
89
91
Continue with nearby questions to strengthen the same chapter concept while you still have the context fresh in mind.
What does the number '1' indicate about a child in line?
If a child at the end of a line says '0', what does that mean?
Is it possible for all five children to say '0' when arranged?
What sequence indicates that the tallest child is in the middle of a line of five?