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दो संख्याओ का ल.स.प. 495 है और उनका म.स.प 5 है. यदि दोनों संख्याओ का योग 100 है. तो उनके बीच का अंतर ज्ञात कीजिये?
(A) 10 (B) 46 (C) 70 (D) 90
Sol:
Suppose the first number is x
Then 2nd number = 100 – x
LCM HCF = 1st number 2nd number
So the difference
2.) A pipe of diameter d can drain a certain water tank in 40 minutes. The time taken by a pipe of diameter 2d for doing the same job?
एक पाइप जिसका व्यास d है टंकी को 40 मिनट में खली करता है तो दूसरा पाइप इसी टंकी को कितने मिनट में खाली करेगा जिसका व्यास 2d है?
(A) 5 minutes (B) 10 minutes (C) 20 minutes (D) 80 minutes
Sol
3.) The greatest one is
इनमे से कोन सा सबसे बड़ा है
(A) (B) (C) (D)
Sol :
4.) The greatest number, by which 1657 and 2037 are divided to give remainders 6 and 5 respectively is,
सबसे बड़ी संख्या ज्ञात कीजिये जिससे 1657 और 2037 को भाग देने पर शेषफल 6 और 5 है?
(A) 127 (B) 133 (C) 17 (D) 305
Sol :
We have to find the HCF of (1657 – 6 = 1651) and (2037 – 5 = 2032)
1651 = 13 x 127
2032 = 16 x 127
So HCF = 127
So, required number will be 127
5.) is equal to?
का मान ज्ञात कीजिये?
(A) (B) (C) (D)
Sol :
6.) A path of uniform width runs round the inside of a rectangular field 38m long and 32 m wide. If the path occupies 600 m2 , then the width of the path is?
एक आयातकर छेत्र जिसकी लम्बाई 38 मीटर और चौड़ाई 32 मीटर है इसके अन्दर एक रास्ता बनाना है जिसका छेत्र्फल 600 मीटर/ वर्ग है तो रास्ते की चौड़ाई क्या होगी?
(A) 30 m (B) 5 m (C) 18.75 m (D) 10 m
Sol:
Let the width of path be x m.
Area of rectangular field
Area of rectangular field without path
Area of the path
x cannot be 30 since the width of the path be 5 m.
7.) If and then find a : b : c : d.?
यदि और तो a : b : c : d?
(A) 84 : 105 : 56 : 165 (B) 105 : 56 : 165 : 84 (C) 56 : 84 : 105 : 165 (D) 22 : 39 : 46 : 56
Sol :
8.) The ratio of the ages of A and B at present is 3 : 1. Four year earlier the ratio was 4 : 1. The present age of A is :
वर्तमान में A और B की आयु का अनुपात 3 : 1 है चार वर्ष पूर्व अनुपात 4 : 1 था ! A की वर्तमान आयु कितनी है ?
(A) 48 years (B) 40 years (C) 32 years (D) 36 years
Sol :
Let the ratio be x.
A = 3x B = x.
Four year ago,
Then the present age of A is 36 years.
9.) The term that should be added to so that resulting expression be a perfect square is:
में कौन सी संख्या जोड़ी जाये की परिणामी पद संहित पूर्ण वर्ग बन जाये?
(A) 2 (B) 4 (C) 1 (D) 2x
Sol:
Required ans is 4.
10.) A certain amount of money earns Rs. 540 as simple interest in 3 years. If it earns a compound interest of Rs. 376.20 at the same rate of interest in 2 years, find the amount.
किसी धनराशि पर साधारण ब्याज के रूप में 3 वर्ष में रु. 540 मिलते है यदि 2 वर्ष में उतनी ही ब्याज दर पर रु. 376.20 का चक्रव्रिधि ब्याज मिले तो राशि ज्ञात कीजिये?
(A) 2000 (B) 2100 (C) 1600 (D) 1800
Sol :
If 3 years S.I is 540 then one year S.I will be 180.
If two year CI is 376.20 then we can say that
Then rate of interest is 9 %.
So
Answer Key
Q1. A
Q2. B
Q3. D
Q4. A
Q5. D
Q6. B
Q7. C
Q8. D
Q9. B
Q10. A