Answer:
D)
because thats the only answer that would make sence.
Number of ways the second grade students can sit on the first row is 5! = 5P5
Number of ways 15 first grade students can sit in the remaining 20 seats is 20P15
Therefore, required number of ways is 5P5 * 20P15. (option B)
B) is the correct because the definition of Isosceles indicates to the two sides that are congruent to each other.
hope, help and heal.
