Author: Dr. Abu Bakkar Siddiq

BCS : A school can arrange students in rows of 8, 10 and 12 during drills. It can also be arranged in a square. At least how many students are there in that school? [12th BCS]

(a) 3600
(b) 2400
(c) 1200
(d) 3000

Answer : (a) 3600

BCS : A student answers 15 of the first 20 questions correctly in the annual examination. 1/3 of remaining questions answered correctly. All questions are of equal value. If the student got 75% marks then what was the number of questions? [12th BCS]

(a) 15
(b) 20
(c) 25
(d) 18

Answer : (b) 20