Factorise 9a^2-b^2??
2 answers:
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Given:
Number of spheres = 2
Number of prisms = 3
Number of pyramids = 5
To find:
The probability that a pyramid will be selected.
Solution:
We have,
Favorable outcomes = Number of pyramids
= 5
Total outcomes = Total number of figures
=
=
Now, the required probability is:
Therefore, the probability that a pyramid will be selected is 0.5.
She would have 1 cup of flour left.
Work: 6 1/2 - 2 3/4 = 3 3/4 - 2 3/4 = 1
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