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Which of the following statements are true ? (A) A sentence α entails another sentence β  if β is true in few worlds where α is true. (B) Forward chaining and backward chaining are very natural reasoning algorithms for knowledge bases in Horn form. (C) Sound inference algorithms derive all sentences that are entailed. (D) Propositional logic does not scale to environments of unbounded size. Choose the correct answer from the options given below:
Forward chaining systems are _____________ where as backward chaining systems are ___________
There are primarily two modes for an inference engine: forward chaining and backward chaining.
Which algorithm are in more similar to backward chaining algorithm?
Two stock options are available for buying. Each offers a variable rate of return of profit over a period of 10 years. For first 4 years one has an incremental rate of return which increases by 2% per year starting from 3% of the investment and stays constant at 8% for the rest of the period. The second one has a constant annual rate of return throughout and give 10% more return after 10 years. What is the annual rate of return on second option?
The height of a tree is defined as the number of edges on the longest path in the tree. The function shown in the pseudocode below is invoked as height(root) to compute the height of a binary tree rooted at the tree pointer root. int height (treeptr n) { if (n == NULL) return -1;   if (n →  left == NULL)        if (n →  right == NULL) return 0;        else return ; \(\boxed{B1}\);     // Box 1 else { h1 = height (n →  left);          if (n → right == NULL) return (1+h1);          else { h2 = height (n → right);          return ; \(\boxed{B2}\)   // Box 2                        }            } } The appropriate expressions for the two boxes B1 and B2 are
For economically backward classes, by the 103rd Constitutional Amendment in 2019, Article 15(6) and 16(6) of the Indian Constitution, the following provisions are made. Choose the correct option. a. This reservation can be availed by persons not benefiting by schemes for SC, ST, OBC. b. The reservation proportion will be up to 13% for economically backward classes. c. This reservation is for education and job-related benefits. d. The reservation proportion will be up to 10% for economically backward classes. Which of the above sentences is correct?
Indira Sawhney's judgment is a benchmark judgment on the issue of reservation. Which among the following statements are true?
1. Reservations for backward classes.
2. Identification of backward classes through Hindu Caste System.
3. Identification of backward classes through occupation.
4. Imposition of creamy layer.
How can be the goal is thought of in backward chaining algorithm?
What is used in backward chaining algorithm?