The average age of a class of 24 girls is 15 years. If 6 new girls having average age of 10 years join the class, then the average age of the class becomes:
Total age of 24 girls = 24 × 15 = 360 years Total age of 30 girls = 360 + (6 × 10) = 420 years Therefore new average age = 420/30 = 14 years
In the following questions select the related figure from the given alternatives.
Question figure:
How many triangles are there in the following figures?
From the given answer figures, select the one in which the question figure is hidden/embedded (rotation is not allowed).
Select the figure from the options that can replace the question mark (?) and complete the pattern (No rotation allowed).
