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x – 4 = z
y – x = 8
8 – z = t
For the system of equations given, what is the value of z ?
(i) x= 7
(ii) t= 5CorrectIncorrect/Not answered
If x is an integer, is 9x + 9-x =b?
(i) 3x + 3-x = √(b+2)
(ii) x > 0CorrectIncorrect/Not answered
Is x a negative number?
(ii) x+3 is positiveCorrectIncorrect/Not answered
On a recent trip, Rakibul drove 50 miles. What was the average speed at which he drove the 50 miles?
(i) He drove 30 miles at an average speed of 60 miles per hour and then drove the remaining 20 miles at an average speed of 50 miles per hour.
(ii) He drove a total of 54 minutes.CorrectIncorrect/Not answered
How many people are directors of both Unilever and BAT?
(i) There were 17 directors present at a joint meeting of the directors of Unilever and BAT, and no directors were absent.
(ii) Unilever has 12 directors and BAT has 8 directors.CorrectIncorrect/Not answered
If Tabassum saved 600 Taka of her earnings last month, how much did Tabassum earn last month?
(i) Tabassum spent 1/2 of her earnings last month for living expenses and saved 1/3 of the remainder.
(ii) Of her earnings last month, Tabassum paid twice as much in taxes as she saved.CorrectIncorrect/Not answered
An RFL tub has a band painted around its circumference, as shown above. What is the surface area of this painted band?
(i) x= 0.5
(ii) The height of the tub is 1 meter.CorrectIncorrect/Not answered
In a random sample of 80 adults, how many are University of Dhaka graduates?
(i) In the sample, the number of adults who are NOT University of Dhaka graduates is 3 times the number who are University of Dhaka graduates.
(ii) In the sample, the number of adults who are NOT University of Dhaka graduates is 40 more than the number who are University of Dhaka graduates.CorrectIncorrect/Not answered
In FBS of Dhaka University the number of students enrolled in both a Marketing course and a Finance course is how much less than the number of students enrolled in neither?
(i) In FBS there are 60 students enrolled in a Marketing course.
(ii) In FBS thare are 85 students enrolled in a Finance course.CorrectIncorrect/Not answered
Rahim recorded the number of eggs in each of 10 birds’ nests. What was the standard deviation of the numbers of eggs in the 10 nests?
(i) The average (arithmetic mean) number of eggs for the 10 nests was 4.
(ii) Each of the 10 nests contained the same number of eggs.CorrectIncorrect/Not answered