 Mathematics Questions for CDS & AFCAT: 17th December

Dear Students, Defence Adda is providing you all with this quiz on Mathematics questions for CDS, AFCAT, CAPF and other Defence Examinations. The questions asked in Mathematics Section of most of the defence examinations are based on the topics from Mathematics of Class 11th and 12th. The questions asked in this section are complex and comparatively difficult but once attempted with high accuracy, can fetch you full marks in this section. Also, practice on a daily basis helps one dive into the core concepts of a subject and thus, help her perform to the best of her ability in the real examinations. So, attempt the daily quizzes being provided by Defence Adda and score to the maximum in the Mathematics Section of all sorts of defence examinations. Q2. If the complement of an angle is one-fourth of its supplementary angle, then the angle is
(a) 120°
(b) 60°
(c) 30°
(d) 90°  Q5. 11,11,11,111 is divisible by,
(a) 3 and 37 only
(b) 3, 37 and 11 only
(c) 3, 11, 37 and 111 only
(d) 3, 11, 37, 111 and 1001 only

Q6. The sum of four numbers is 64. If you add 3 to first number, 3 is subtracted from the second number, the third is multiplied by 3 and the fourth is divided by 3, then all the results become equal. What is the difference between the largest and the smallest of the original numbers?
(a) 32
(b) 27
(c) 21
(d) None of these

Q7. An 8-litre cylinder contains a mixture of oxygen and nitrogen, the volume of oxygen being 16% of total volume. A few litres of the mixture is released and equal amount of Nitrogen is added, then the same amount of the mixture as before is released and replaced by nitrogen. Oxygen content now becomes 9% of the total value. How many litres of mixture are released each time?
(a) 2 l
(b) 5 l
(c) 1.5 l
(d) 3 l

Q8. Mr. Maitray invested money in two schemes A and B offering C.I. at the rate of 8p.c.p.a. & 9p.c.p.a. respectively. If the total amount of interest incurred through the two schemes together in two years was Rs. 4818.30 and the total amount invested was Rs. 27,000 each. What was the amount invested in scheme A (in Rs)?
(a) 12000
(b) 15000
(c) 24000
(d) 20000  SOLUTIONS         