Learning Task 4. Solve the following problems. Write your answer on the space provided 1. Find the smallest number that is divisible by 3, 5, 7 and 11. 2. Find the smallest number that is divisible by 2, 3, 4, 5, 6 and 12. 3. Xyrelle made 4,206 greeting cards to sell. She will sell the cards by box, with the same number of cards in each box and no cards left over. How many cards could Xyrelle put in each box? 4. If three numbers are added in pairs, the sums are equal to 21, 32, and 47. What is the least of the three numbers? 5. A number is a perfect number if it is the sum of all its integral divisor except itself: From 8, 9, 28 and 64, which of these is a perfect number?