Question & Answer: What is the value of price, meal1? a. 8 b. 10.0 c. 12.0 d 14 e. None of the above What is the value of price_ meal2? a. 5.0 b. 6.0 c…..

23. What is the value of price,meall? b 100 e 12.0 d 14 None of the above 24 What is the value of price, meal2? a 5.0 b. 6.0 c. 85 d. 9.5 e. None of the above. 25. What is the value of price meal37 a. 8.5 b. 9.5 c. 10.0 e. None of the above. or question 26, refer to the following code: 1 def mystery2(a, b) 2. 3. return 0 return a + mystery2(a, b-l) 26. What is the value of mystery2(4,6)? a. 0 b. 4 c. 20 d. 24 e. None of the above. or question 27, refer to the following code: 1 def mystery3(a): 2. 3. if len(a)-= 1: if alo] isdigit(O return int(alo) 5. 6. 7. 8. else: return 0 else return mystery3(alol)+ mystery3(all:D 27. What is the value of mystery3cISC is fun)? a. 0 b. 12 c. Hello, world d. This would cause an erro Python

What is the value of price, meal1? a. 8 b. 10.0 c. 12.0 d 14 e. None of the above What is the value of price_ meal2? a. 5.0 b. 6.0 c. 8.5 d. 9.5 e. None of the above. What is the value of price_meal3? a. 8.5 b. 9.5 c. 10.0 d. 11 e. None of the above. For question 26, refer to the following code: 1. def mystery2(a, b): 2. if b = = 1: 3. return 0 4. return a + mystery2(a, b-l) What is the value of mystery2(4, 6)? a. 0 b. 4 c. 20 d. 24 e. None of the above. For question 27, refer to the following code: def mystery3(a): if len(a) = = 1: if a[0]. isdigit(): return int(a[0]) else: return 0 else return mystery3(a[0])+ mystery3(a[1]) What is the value of mystery3(‘CISC is fun’)? a. 0 b. 12 c. ‘Hello, world!’ d. This would cause an error

Expert Answer

 

26th and 27th questions are in python in which I guess you need help.

26- In the 26th question, recursion is being used with the base condition as b==1

Initially the call is mystery2(4,6) ,where the value of a is 4 and b is 6. Since b is 6, the base condition is false and the method is called recursively. In each call b is decremented by 1, so in total 5 calls are made resulting in the return value of 20

The complete calculation is shown in the below image

ANSWER: 20

27- When mystery3(‘CISC is fun!’) is called, it would go to line 8 as len(a) is not equal to 1. In line 8, the method is again called recursively as mystery3(‘C’)+mystery3(‘ISC is fun!’).

mystery3(‘C’) would return 0(line 6) as its length is equal to 1 and C.isdigit() is false.

mystery3(‘ISC is fun!’) would go to line 8 resulting in mystery3(‘I’)+mystery3(‘SC is fun!’).

So in each call mystery3(a[0]) part would generate 0 and add it to the final return value.

The return value and the recursive calls generated are shown in the image below

ANSWER: 0

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