Mathematics Question For RRB, Railway Group D, Rajasthan SI 01-08-2018

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Question(1) The height of a cone and the base of its base are increased by 100%. What will be the percentage of increase in volume of cone?

 एक शंकु की ऊँचाई तथा उसके आधार के अर्ध्द्व्यास दोनों में 100% की वृध्दि की जाती है | शंकु के आयतन में वृध्दि का प्रतिशत होगा ?

(A) 800%

(B) 700%

(C) 563%

(D) 780%

Question(2) A solid cylinder, whose base is 16 cm in diameter And height is 2 cm Is it melted and 12 shells of the same size are made, the length of the diameter of each sphere?

 एक ठोस बेलन, जिसके आधार का व्यास 16 सेमी. तथा ऊँचाई 2 सेमी. है को पिघलाकर समान साइज के 12 गोले बनाए गए हैं प्रत्येक गोले के व्यास की लम्बाई होगी ?

(A) 4 सेमी

(B)3 सेमी

(C)7 सेमी

(D)9 सेमी

Question(3) What will be the volume of a lumbar circular cylinder, if its height is 40 cm The circumference of its base is 66 cm Ho ?

 एक लम्बिक वृत्ताकार बेलन का आयतन क्या होगा, यदि उसकी ऊँचाई 40 सेमी. हो उसके आधार की परिधि 66 सेमी. हो ?

(A) 19000 सेमी^3

(B) 14956सेमी^3

(C) 13860 सेमी^3

(D) 14856 सेमी^3

Question(4) The height of a room is ‘a’ and the area of the two enclosed walls of the room is ‘b’ and ‘c’. Will the area of the room be covered?

 किसी कमरे की ऊँचाई ‘a’ तथा कमरे की दो संलग्न दीवारों के क्षेत्रफल ‘b’ तथा ‘c’ है | कमरे की छत का क्षेत्रफल होगा ?

(A)ab /a^2

(B) bc/a^2

(C) cb/a^2

(D)ca /a^2

Question(5) If the volume of two cubes is a ratio of 27: 1 then what is the ratio in their arms?

 यदि दो घनों के आयतनों में 27:1 का अनुपात है तो इनकी भुजाओं में अनुपात क्या होगा ?

(A) 3:1

(B) 4:1

(C)5:1

(D)6:1

All Solutions (1-5):

Que(1).Ans-(B)

Que(2).Ans-(A)

Que(3).Ans-(C)

Que(4).Ans-(B)

Que(5).Ans-(A)

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