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Q. (1–3) What approximate value should come in place of question mark (?) in the following questions?
निम्नलिखित प्रश्नों में प्रश्नवाचक चिन्ह (?) के स्थान पर लगभग क्या मान आना चाहिये?
Q.1. 17.31 × 15.05 + 62.05 × 12.5 – 8.98 × 25.725 = ?
(1) 750
(2) 700
(3) 850
(4) 800
(5) 825
Q.2. 
(1) 1050
(2) 1040
(3) 1060
(4) 1030
(5) 1530
Q.3. 6240.386 + 4072.389 - 503.798 = ?% of 4680
(1) 210
(2) 200
(3) 230
(4) 220
(5) 240
Q.4. A number 'a' equals (3/2) the average of 10, 12, and b. What is b in terms of a?
एक संख्या a , 10, 12, और b के औसत का (3/2) भगा के बराबर है | b का मान a के पदों में क्या है?
(1) (2a/3) - 22
(2) (4a/3) - 22
(3) 2a - 22
(4) (a/2) + 11
(5) None of these/इनमें से कोई नहीं
Q.5. If 21 women can do a piece of work in 25 days working 10 hours a day, then in how women are required to complete the work in 15 days by working 7 hours a day?
यदि 21 महिलायें किसी कार्य को प्रतिदिन 10 घंटे करके 25 दिनों में पूरा कर सकती है, तो उसी कार्य को 15 दिनों में पूरा करने के लिए 7 घंटे प्रतिदिन कार्य करके कितनी महिलाओं की आवश्यकता होगी ?
(1) 45
(2) 47
(3) 50
(4) 54
(5) 60
Q.6. Two dice are rolled simultaneously, find the probability of their sum to be a prime number greater than 3.
दो पांसो को एक साथ फेका जाता है, उनका योग 3 से बड़ी अभाज्य संख्या आने की प्रायिकता ज्ञात कीजिये ।
(1) 1/2
(2) 1/3
(3) 1/4
(4) 5/12
(5) 7/36
Q.7. 5 years ago age of father was 3.5 times of the age of son. 7 years hence age of father will become 2.5 times of age of Son. Find the sum of their present ages.
5 वर्ष पूर्व पिता की आयु पुत्र की आयु की 3.5 गुना थी, 7 वर्ष पश्चात पिता की आयु पुत्र की आयु की 2.5 गुना हो जाती है। उनकी वर्तमान आयु का योग ज्ञात कीजिए ।
(1) 86 years/वर्ष
(2) 91 years/वर्ष
(3) 90 years/वर्ष
(4) 95 years/वर्ष
(5) None of these/इनमें से कोई नहीं
Q. (8– 10) Find the wrong number in the following number series.
निम्नलिखित संख्या श्रृंखला में गलत पद ज्ञात कीजिये |
Q.8. 46 74 116 179 272.5 415.25
(1) 74
(2) 415.25
(3) 46
(4) 272.5
(5) 179
Q.9. 68 118 222 236 520 720
(1) 68
(2) 118
(3) 222
(4) 336
(5) 720
Q.10. 87 116 174 261 387 522
(1) 387
(2) 174
(3) 261
(4) 87
(5) 522
ANSWERS
Q1. (4) 17.31 × 15.05 + 62.05 × 12.5 – 8.98 × 25.725 = ?
17 × 15 + 62 × 12.5 - 9 × 26 = ?
255 + 775 - 234 = ?
? = 796 ≈ 800
Q2. (1) 
17 × 72 = ? + 178
? = 1046 ≈ 1050
Q3. (1) 6240.386 + 4072.389 - 503.798 = ?% of 4680
6240 + 4072 - 504 = ?% of 4680
(9808 ÷ 4680) × 100 = ?
2.09 × 100 = ?
? = 209 ≈ 210
Q4. (3) 
2a = 22 + b
b = 2a – 22
Q5. (3) Required number of women/अभीष्ट महिलाओं की संख्या = 
= 50 women
= 50 women
Q6. (2) Clearly their sum should be 5 or 7 or 11/स्पष्टतः उनका योग 5, 7 या 11 होना चाहिए ।
Hence required probability/अतः अभीष्ट प्रायिकता =
Q7. (2) 7: 2 = 5) × 3 = 21: 6
5: 2 = 3) × 5 = 25: 10
4 = 12
1 = 3
Required value/अभीष्ट मान = 27 × 3 + 10 = 91 years/वर्ष
Q8. (4) × 1.5 + 5, × 1.5 + 5, × 1.5 + 5, × 1.5 + 5, × 1.5 + 5
Hence 273.5 should be at the place of 272.5/अतः 272.5 के स्थान पर 273.5 आना चाहिए |
Q9. (2) 43 + 4, 53 - 5, 63 + 6, 73 -
7, 83 + 8, 93 – 9
Hence 120 should be at the place of 118/अतः 118 के स्थान पर 120 आना चाहिए |
Q10. (1) + 29, + 58, + 87, + 116, + 145
Hence 377 should be at the place of 387/अतः 387 के स्थान पर 377 आना चाहिए |
