Dear Readers,
Mahendras has started special quizzes for IBPS RRB Exam so that you can practice more and more to crack the examination. This IBPS RRB Exam special quiz series will mold your preparations in the right direction and the regular practice of these quizzes will be really very helpful in scoring good marks in the Examination. Here we are providing you the important question of reasoning ability for the IBPS RRB Exam.
(1) The average of 5 numbers is 306.4. The average of first two numbers is 431 and that of last two numbers is 214.5. What is the third number?
5 संख्याओं का औसत 306.4 है। पहली दो संख्याओं का औसत 431 और अंतिम दो संख्याओं का औसत 214.5 है। तीसरी संख्या कौन सी है?
(1) 108
(2) 52
(3) 321
(4) Cannot be determined
(5) None of these
(2) Suresh's age is twice his daughter's age. After 6 years the ratio of ages of Suresh and his daughter will be 23:13 respectively. What is Suresh's present age?
सुरेश की आयु उसकी पुत्री की आयु की दोगुनी है। 6 वर्ष बाद सुरेश और उसकी पुत्री की आयु का अनुपात क्रमशः 23:13 होगा। सुरेश की वर्तमान आयु क्या है?
(1) 40 years
(2) 36 years
(3) 46 years
(4) Cannot be determined
(5) 51 years
(3) The average age of a class of 65 boys is 14 years. Out of them, the average age of 20 boys is 14 years and that of other 15 boys is 12 years. What is the average age of remaining boys?
एक कक्षा में 65 लड़कों की औसत आयु 14 वर्ष है। उनमें से 20 लड़कों की औसत आयु 14 वर्ष और अन्य 15 लड़कों की औसत आयु 12 वर्ष है। शेष लड़कों की औसत आयु क्या है?
(1) 16 years
(2) 13 years
(3) 17 years
(4) 15 years
(5) 13 years
(4) A and B started a business investing Rs. 12000 and Rs. 16000 respectively. After 8 months C joined the business with Rs. 15000. At the end of 2 years, the profit was Rs. 45600. What is C's share?
A और B ने क्रमशः 12000 रू. और 16000 रू. निवेशित करके एक व्यवसाय आरम्भ किया। 8 माह बाद C 15000 रू. के साथ व्यवसाय में शामिल हो गया। 2 वर्षो के अन्त में 45600 रू. का लाभ हुआ। C का हिस्सा क्या है?
(1) Rs. 21200
(2) Rs. 19200
(3) Rs. 14400
(4) Rs. 12000
(5) Rs. 11000
(5) 12 men can complete a work in 18 days. 6 days after they started working, 4 men joined them. How many day will all of them take to finish the remaining work?
12 पुरूष एक काम को 18 दिनों में पूरा करते है। 6 दिन काम करने के बाद 4 पुरूष और सम्मिलित हो गए। शेष काम कितने दिनों में पूरा होगा?
(1) 10
(2) 9
(3) 12
(4) 45
(5) 49
(6) The difference between 78% of a number and 56% of the same number is 429. What is 66% of that number?
एक संख्या के 78% और उसी संख्या के 56% के बीच अन्तर 429 है। इस संख्या का 66% क्या है?
(1) 1306
(2) 1327
(3) 1248
(4) 1287
(5) None of these
Q-(7-10) What value will come in place of question mark (?) in the following questions?
दिए गए प्रश्नों में प्रश्नवाचक चिह्न (?) के स्थान पर क्या मान आएगा ?
(7) 84 ×? % of 
= 14.49
= 14.49
(1) 19
(2) 21
(3) 23
(4) 27
(5) 30
(8) 
(1) 9.4
(2) 10.1
(3) 11.2
(4) 8.4
(5) 7.3
(9) 24% of 350 + 25% of ? = 70% of 455
(1) 983
(2) 938
(3) 839
(4) 893
(5) 883
(10) 3.4 ÷ 0.2 × 0.2 × 34 = ?
(1) 111.5
(2) 112.4
(3) 117.9
(4) 115.6
(5) 118.4
Answer Key-
Q-(1) Sol-(5)
Third number
= (306.4×5) – (431×2 + 214.5×2)
= 1532 – 1291 = 241
Q-(2) Sol-(1)
Q-(3) Sol-(4)
Q-(4) Sol-(4)
Q-(5) Sol-(2)
Q-(6) Sol-(4)
Q-(7) Sol-(3)
Q-(8) Sol-(2)
Q-(9) Sol-(2)
84 + 0.25 × ? = 318.5
0.25 ×? = 234.5
? = 938
Q-(10) Sol-(4)
17 × 6.8 =?
115.6 =?
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MAHENDRA GURU