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निम्नलिखित प्रश्नों में प्रश्नवाचक चिन्ह (?) के स्थान पर क्या आयेगा?
Q.1. 792.02 + 101.32 – 306.76 = ?
(1) 893.34
(2) 1200.10
(3) 997.11
(4) 586.68
(5) None of these/इनमें से कोई नहीं
Sol. (4) ? = 792.02 + 101.32 – 306.76
= 893.34 – 306.76 = 586.58
Q.2.
(1)
(2)
(3)
(4) 17
(5) None of these/इनमें से कोई नहीं
Sol. (3)
4 + 6 + 5 +
= ?15 +
= ?? =
Q.3. 300% of 150 = ?% of 600
(1) 75
(2) 45
(3) 450
(4)
(5) None of these/इनमें से कोई नहीं
Sol. (5) 300% of 150 = ?% of 600
450 = ?% of 600
? = 6
Q.4. Three-fifth of a number is 30 more than 50 percent of that number. What is 80 percent of that number?
एक संख्या का
वाँ भाग, उस संख्या के 50 प्रतिशत से 30 अधिक है। उस संख्या का 80 प्रतिशत क्या है?(1) 300
(2) 60
(3) 240
(4) Cannot be determined/निर्धारित नहीं किया जा सकता है ।
(5) None of these/इनमें से कोई नहीं
Sol. (3) Let the number be x/माना संख्या x है ।
Q.5. When the price of a product was increased by 15%, the number of sold products was decreased by 20%. What was the net effect?
जब एक उत्पाद के मूल्य को 15% बढ़ाया जाता है तो बिकने वाले उत्पादों में 20% की कमी हो जाती है। कुल प्रभाव क्या है?
(1) 8% profit
(2) 5% loss
(3) 8% loss
(4) Cannot be determined/निर्धारित नहीं किया जा सकता है ।
(5) None of these/इनमें से कोई नहीं
Sol. (3) Let original price/माना मूल मूल्य = Rs.100
and number of products originally sold/और मूल रूप से बेचे गए उत्पादों की संख्या = 100
original sale proceed/कुल मूल बिक्री = Rs. (100×100)
= Rs. 10000
New sale proceed/नयी की गयी बिक्री = Rs. (115×80)
= Rs. 9200
Decrease/कमी % =
=
= 8%Q.6. The average of four consecutive odd numbers is 12. Which is the lowest odd number?
चार क्रमागत विषम संख्याओं का औसत 12 है। सबसे छोटी विषम संख्या क्या है?
(1) 9
(2) 3
(3) 12
(4) Cannot be determined/निर्धारित नहीं किया जा सकता है ।
(5) None of these/इनमें से कोई नहीं
Sol. (1) Let the four consecutive odd numbers be 2x –1, 2x+1, 2x+3, 2x+5
माना चार क्रमागत विषम संख्याएँ 2x –1, 2x+1, 2x+3, 2x+5 हैं ।
8x+8 = 48
8x = 40,
x = 5
Required number/अभीष्ट संख्या = 2x – 1 = 2×5 – 1 = 9
Q.7. One year ago, the ratio of Yamini's/ and Jamuna's age was 6:7 respectively. Four years hence, this ratio would become 7:8. How old is Jamuna?
एक वर्ष पहले, यामिनी तथा जमुना की आयु का अनुपात क्रमशः 6 : 7 था। चार वर्ष बाद, यह अनुपात 7 : 8 हो जाता है। जमुना की आयु क्या है ?
(1) 35 years/वर्ष
(2) 30 years/वर्ष
(3) 31 years/वर्ष
(4) Cannot be determined/निर्धारित नहीं किया जा सकता है ।
(5) None of these/इनमें से कोई नहीं
Sol. (5) Let the present ages of Yamini and Jamuna is 6x+1years and 7x+1 years respectively.
माना यामिनी और जमुना की वर्तमान आयु क्रमशः 6x + 1 वर्ष और 7x + 1 वर्ष हैं ।
Now four year hence/अब चार वर्ष बाद,
49x + 35 = 48x + 40
x = 40 – 35 = 5
Jamuna's present age/जमुना की आयु = 7x+1
= 7×5+1 = 36 years/वर्ष
Q. (8 – 10). What will come in place of question mark (?) in the following number series?
निम्नलिखित संख्या – श्रृंखला में प्रश्नवाचक चिन्ह (?) के स्थान पर क्या आयेगा?
Q.8. 3 4 16 75 ? 1945
(1) 360
(2) 362
(3) 364
(4) 366
(5) None of these/इनमें से कोई नहीं
Sol. (3) × 1 + (1)3, × 2 + (2)3, × 3 + (3)3, × 4 + (4)3, × 5 + (5)3
(1) 15150
(2) 15015
(3) 10515
(4) 15510
(5) None of these/इनमें से कोई नहीं
Sol. (2) × 7, × 6.5, × 6, × 5.5, × 5
Q.10. 2 13 ? 271 817 1639
(1) 67
(2) 65
(3) 69
(4) 71
(5) None of these/इनमें से कोई नहीं
Sol. (1) × 6) + 1, × 5) + 2, × 4) + 3, × 3) + 4, × 2) + 5
