# Mathematics Questions for CDS & CAPF: 17th October

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.

**Q1. What is the unit digit of 1! + 2! + 3! + …….49! ?**

(a) 0

(b) 1

(c) 3

(d) 5

**Q2. Without stoppage a train travels at an average speed of 75 km/h and with stoppage it covers same destination at an average speed of 60 km/hr. How many minutes per hour does the train stop?**

(a) 15 min

(b) 8 min

(c) 12min

(d) 10 min

**Q3. A regular square pyramid has side of its base of 24 cm and height 40 cm is melted and re-casted into 4 regular triangular pyramids of equilateral base of side ‘a’ cm and height 12√3 cm. What is the value of ‘a’ (in cm) ?**

(a) 24

(b) 12

(c) 8√10

(d) 15

**Q7. The ratio of curved surface area and volume of a cylinder is 2 : 7. The ratio of total surface area and volume is 3:7. What is the respective ratio of its base radius and height?**

(a) 1:1

(b) 3:2

(c) 1:2

(d) 7:10

**SOLUTIONS**

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