Question

Three points out of the 7 shown can be connected to form an isosceles triangle. Find the product of those three point numbers. Type the product only.
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Answer 1

Answer:

Correct option is D)

A regular 3 sided polygon is nothing else but a heptagon for creating isosceles triangle we need to choose adjacent sides only.

No. of △

′

s formed =7C

3

While number of isosceles triangle formed = No. of points × points available =7×3.

⇒ So, probability =

7C

3

7×3

=

35

21

=

5

3

.

Hence, the answer is

5

3

.

solution