From the assumption and trial and error method, last three digits sum must leave the same digit as the answer. It is possible only if the answer must be units digit number leaving tens digit as carry. And the possible 3rd digit is 5. Since 5 + 5 + 5 = 15  Now, 2nd step is  1 + x + x + x = 5 => 3x = 4 It is possible with x = 8. 8 + 8 + 8 + 1 = 25 leaving 2 as carry.  Now, 3rd step is 2 + x + x + x = 5 => x = 1   Hence, the three dgits are 1, 8, 5. 185 + 185 + 185 = 555.

Answer: C) Both A & B Explanation:

Answer: B) 117 Explanation: Let us calculate both the length and width of the room in centimeters. Length = 6 meters and 24 centimeters = 624 cm width = 4 meters and 32 centimeters = 432 cm As we want the least number of square tiles required, it means the length of each square tile should be as large as possible.Further,the length of each square tile should be a factor of both the length and width of the room. Hence, the length of each square tile will be equal to the HCF of the length and width of the room = HCF of 624 and 432 = 48 Thus, the number of square tiles required = (624 x 432 ) / (48 x 48) = 13 x 9 = 117

The OSI Model is used as a reference model. The primary reason the OSI model was created was so that different networks could inter-operate. Hence, different networks could communicate.

The policy of imperial preferences adopted by Britain in its colonies in 1932 is also known as the Ottawa Agreement. This agreement was a series of bilateral trade agreements between the United Kingdom and various members of the British Empire, including Canada, Australia, South Africa, and New Zealand. The agreements aimed to promote trade within the British Empire by providing preferential treatment to goods from member countries.