# Mathematics Questions for CDS & AFCAT: 20th January

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.

**Q5. Sides of a triangle are 12, 16 and 20 cm. Find distance between its orthocenter and circumcentre.**

(a) 15 cm

(b) 16 cm

(c) 10 cm

(d) 20 cm

**Q6. Mansukh can do a piece of work in 10 hours. If he is joined by Jayanti who is 50% more efficient, in what time will they together finish the work?**

(a) 2 hours

(b) 6 hours

(c) 4 hours

(d) 3 hours

**Q7. If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 25088, and Rs 28098.56 respectively, what is the rate of interest?**

(a) 6 percent

(b) 24 percent

(c) 12 percent

(d) 19 percent

**Q8.The value of x for which the expressions 19 - 5x and 19x + 5 become equal is ______.**

(a) 7/12

(b) 7/12

(c) 12/7

(d) 12/7

**Q9. The mean of marks secured by 45 students in division A of class X is 69, 65 students of division B is 65 and that of 50 students of division C is 63. Find the mean of marks of the students of three divisions of Class X.**

(a) 65.5

(b) 64.8

(c) 64.1

(d) 66.9

**Q10. 9/4thof 7/2 of a number is 126, then 7/2th of that number is _____.**

(a) 56

(b) 284

(c) 72

(d) 26

**SOLUTIONS**

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