Q1)Let Σ = a, b}(21Points)a)Build an FA that accepts only those words that do not end in ab. b)Build an FA that accepts only the language of all words with b as the second letter. Find the regular expression for the language. c)Build an FA that accepts only those words that have more than four letters. d)Build an FA that accepts only those words that have fewer than four letters. e)Build an FA that accepts only those words with exactly four letters. f)Build an FA that accepts only those words that begin or end with a double letter. g)Describe inwords and give a regular expression for the language accepted by eachof the following FAs.

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

50-60=10

step-by-step explanation:

5x10^11 x 65

325 x 10^11

or

325,

they can either have 0,1, or infinite solutions

step-by-step explanation: