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Logical Thinking Questions - All Grades

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Grade 10 Logical Thinking
Which of the following is the biconditional statement for the conditional statement below?

If today is Saturday or Sunday, then it is the weekend.
  1. It is the weekend if and only if it is Saturday or Sunday.
  2. If is not the weekend, then it not Saturday or Sunday.
  3. If it is not Saturday or Sunday, then it is not the weekend.
  4. It is not Saturday or Sunday if and only if it is the weekend.
Grade 10 Logical Thinking
Grade 10 Logical Thinking
Grade 10 Logical Thinking
Grade 10 Logical Thinking
On Wednesdays we wear pink.
It is Wednesday.
Therefore
  1. we are wearing pink.
  2. we are not wearing pink.
  3. we don't have to wear pink.
  4. there is not enough information given.
Grade 10 Logical Thinking
Determine the inverse of the statement: if p, then q.
  1. If ~q, then p
  2. If p, then ~q
  3. If ~p, then q
  4. If ~p, then ~q
Grade 10 Logical Thinking
Give the contrapositive to the following statement: If I read a lot of books, I will get smarter.
  1. If I get smarter, I read a lot of books.
  2. If I read a lot of books, I won't get smarter.
  3. If I don't get smarter, then I don't read a lot of books.
  4. If I don't read a lot of books, I will get smarter.
Grade 6 Logical Thinking
David went shopping for school clothes. He bought 2 pairs of slacks, 3 shirts, and 1 sweater. What do you NOT need to know to find out how much money David had left after shopping?
  1. how many hours David shopped
  2. how much money David started with
  3. how much money each pair of slacks cost
  4. how much money the sweater cost
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