Which of the following is NOT a common factor of 18 and 27?
6 is a common factor of 18 as-6 x 3 = 18
Mary and her friends put their marbles into groups of ten. Mary had 6 groups, Sandy
had 5 groups and Jack had 9 groups. There were 4 marbles left over. How many marbles did the three friends have altogether ?
What is the least number of squares that must be added so that the line MN becomes a line of symmetry?
Sit can also be 4
A black squirrel takes minutes to climb a tree. A brown squirrel takes minutes to do the same. Which squirrel climbs the tree faster and by how much?
ABlack squirrel, mins
BBlack squirrel, mins
CBrown squirrel, mins
DBrown squirrel, mins
There is an error in the solution. If we compare 55/20 (distance covered by the black squirrel) and 28/20 (distance covered by the brown squirrel), then obviously 55/20 is greater. (the distance covered by the black squirrel). But in the solution, it is said that the brown squirrel has traveled more distance. Which is actually wrong. I request SOF Olympiad Trainer to correct it.
Which of the following Venn diagrams best represents the relationship amongst, "Door, Window, House"?