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then find the value of
यदि
तो इसका मान क्या होगा 
(A) 3m (B) 4m (C)
(D) 
2.) Find the average of all prime number fom 1 to 20?
1 और 20 के बीच सभी अभाज्य संख्याओ का औसत क्या है?
(A) 9.625
(B) 9.75
(C) 8.66
(D) 10.625
3.) The speed of first train is 45km/hr. and the speed of another train is 10m/sec. find the ratio of their speed?
एक रेलगाड़ी की चाल 45 किमी/घंटा है और दूसरी रेलगाड़ी की चाल 10 मीटर/सेकंड है दोनों गाडी की चाल का अनुपात ज्ञात कीजिये?
(A) 5 : 4
(B) 2 : 3
(C) 9 : 2
(D) 4 : 3
4.) A merchant sells a radio at 10 % profit if he bought 10% less and sold it Rs.132 less then he got 10% profit. Find the cost price of radio?
एक व्यापारी एक रेडियो को 10% के लाभ पर बेचता है यदि उसने वह 10% कम पर ख़रीदा होता और रु. 132 कम में बेचा होता, तो उसे 10% लाभ मिलता. रेडियो का क्रय मूल्य क्या है ?
(A) 1100
(B) 1200
(C) 1300
(D) 1320
5.) A shopkeeper marked the article 30 % above the cost price. And he gives a discount of 20 % on the M.R.P. find his profit percentage?
एक दुकानदार एक वस्तु पर लागत कीमत से 30% अधिक अंकित करता है यदि वह अंकित मूल्य पर 20% छूट देता है, तो उसका लाभ प्रतिशत क्या है?
(A) 15
(B) 10
(C) 6
(D) 4
6.) The ratio of the volume of two right circular cylinder is 2 : 3. And the ratio of their radius is 1 : 2. Find the ratio of their heights?
यदि दो लम्ब वृतीय शंकुओ के आयतन का अनुपात 2 : 3 है और उनके आधार की त्रिज्याओ का अनुपात 1 : 2 है तो उनकी ऊंचाईयों का अनुपात क्या है?
(A) 3 : 4
(B) 8 : 3
(C) 4 : 3
(D) 3 : 8
7.) The length, breadth and height of a room are in the ratio 3 : 2 : 1 if the volume of the room is 1296 metre3. Then find the breadth of the room?
एक कमरे की लम्बाई , चौड़ाई तथा ऊंचाई का अनुपात 3 : 2 : 1 है यदि कमरे का आयतन 1296 मीटर3. है तो उसकी चौड़ाई क्या है?
(A) 12 metre
(B) 18 metre
(C) 16 metre
(D) 24 metre
8.) If
then find the value of 
?यदि
तो 
का मान क्या है?(A) 0
(B) ½
(C) 1
(D)
9.) If x = 5 +and y = 5 - 2
,then
-
= ?
यदि x = 5 +तथा y = 5 - 2
है, तो
-
= ?
-
-
- None of these
A, B, C ने मिलकर व्यापार आरम्भ किया . A ने 3,20,000 रु. 4 मास के लिए लगाये . तथा B ने 5.10,000 रु. 3 मास के लिए लगाये, तथा C ने 2,70,000 रु. 5 मास के लिए लगाया यदि वर्ष के अंत में कुल लाभ ,124,800.रु. हो तो B का भाग ज्ञात कीजिये?
(A) 45,900
(B) 50,000
(C) 49,200
(D) 79,000
SOLUTION:
(1.) (B)
(2.) (A)
Prime numbers from 1 to 20 are 2, 3, 5, 7, 11, 13, 17 and 19.
So required average is =
(3.) (A)
The speeds of the trains are
(4.) (B)
Let the cost price of radio be 100x.
So selling price will be = 110x.
According to question,
CP = 90x , SP = 110x – 132.
So the cost price of radio is 1200.
(5.) (D)
Let the cost price be 100.
So M.R.P will be 130.
Discount = 20%
So selling price will be = 104
Required profit = 4
Profit percentage
(6.) (B)
According to question,
(7.) (A)
Volume = l x b x h
So breadth of room = 12 metre
(8.) (B)
(9.) (C)
X = 5 +
So
= 
Y = 5 - 2
= 
= 
(10.) (A)
Ratio of A, B and C investment
B’s share
