Olympiad Test Level 2: Number’s Magic- 1 - Class 4 MCQ

The rule followed here is sum of all the numbers given on the sides is equal to the number given in the centre.
In figure 1, sum of numbers = 1+2+4+3+5 = 15
In figure 2, sum of numbers = 3+2 +1+5+6 = 17
Therefore, the centre number is equal to the sum of numbers = 4+4 +2+3+5 = 18

Perimeter is calculated by adding the length of the sides surrounding a shape.
Here, we have 22 sides, if we add all the sides of identical sides.
Each side length = 3 cm
Therefore, Perimeter = 22*3 = 66 cm

In the given figure, total number of triangles = 20
Number of triangles with lines = 7
Number of triangles with dots = 7
Number of blank triangles = 6
Therefore, option B is correct, as fraction of triangles with dots = 7/20.

A square has 4 lines of symmetry.

Goats and cows have 4 legs.
Total legs= (4+3)*4= 28 legs

As apples and oranges come under fruits, option A correctly depicts their relationship.

In all the options, after solving we get 23, except for B where answer is 0.

We should add quantities with the same unit of measurement.
Here adding 936 ml + 95 ml = 1031 ml = 1l 31 ml
Now adding litre quantities = 72+12+1 = 85l
Therefore, final answer is 85l 31 ml.

Here, Bananas sold in week  = 6*10 = 60 (as each banana is equal to 10 bananas)

Value of 1 Star = 33
Value of 1 circle = 22
33 + 22 + 22 = 77