Identify the correct mathematical statements:
A. The value of 1/4 + 1/(4×5) + 1/(4×5×6) is equal to 37/120.
B. 1 + 2 ÷ {1 + 2 ÷ (1 + 1/3)} is equal to 4/5.
C. If the average of 6 numbers is 7, the average of 3 numbers of them is 5, then the average of remaining numbers is 9.
D. If 75% of a number is added to 75, then the result is number itself. Then the number is 300.
E. Largest fraction from 9/31, 6/23, 3/17, 4/11 is 9/31.
Choose the correct answer from the options given below:सही गणितीय कथनों की पहचान कीजिए:
A. 1/4 + 1/(4×5) + 1/(4×5×6) का मान 37/120 के बराबर है।
B. 1 + 2 ÷ {1 + 2 ÷ (1 + 1/3)} का मान 4/5 के बराबर है।
C. यदि 6 संख्याओं का औसत 7 है और उनमें से 3 संख्याओं का औसत 5 है, तो शेष संख्याओं का औसत 9 है।
D. यदि किसी संख्या के 75% को 75 में जोड़ा जाए तो परिणाम वही संख्या होती है। तब संख्या 300 है।
E. 9/31, 6/23, 3/17, 4/11 में सबसे बड़ी भिन्न 9/31 है।
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए:
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Correct answer: B. A, C and D onlyकेवल A, C और D
Explanation
A: 30/120 + 6/120 + 1/120 = 37/120 – true. B: 1+1/3 = 4/3; 2 ÷ 4/3 = 3/2; 1+3/2 = 5/2; 2 ÷ 5/2 = 4/5; 1+4/5 = 9/5, not 4/5 – false. C: (42 − 15)/3 = 9 – true. D: 0.75x + 75 = x gives x = 300 – true. E: 4/11 ≈ 0.364 is larger than 9/31 ≈ 0.290 – false. Answer: A, C and D only.A: 30/120 + 6/120 + 1/120 = 37/120 – सत्य। B: 1+1/3 = 4/3; 2 ÷ 4/3 = 3/2; 1+3/2 = 5/2; 2 ÷ 5/2 = 4/5; 1+4/5 = 9/5, न कि 4/5 – असत्य। C: (42 − 15)/3 = 9 – सत्य। D: 0.75x + 75 = x से x = 300 – सत्य। E: 4/11 ≈ 0.364, 9/31 ≈ 0.290 से बड़ा है – असत्य। उत्तर: केवल A, C और D।More Mathematical Reasoning and Aptitude questions
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