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An assertion and a reason are given below Assertion : When a velocity is kept constant and wavelength is halved, then the frequency is doubled Reason : Velocity = Frequency × Wavelength Choose the answer

The ratio of present ages (in years) of a father and son is 15 : 8. Six years ago, the ratio of their ages was 13 : 6. What is the father's present age?

Which tax reform was specifically recommended by the State Finance Commission (SFC) of Uttar Pradesh?

केले का के लिए भंडारण कितने डिग्री तापक्रम की आवश्यकता होती है?

What is Gol Gumbaz?

The marked price of an article is ` 900 and a customer pays ` 630 for it. What is the discount percentage?

Select the option which is the most appropriate one word substitution for the given group of words. A shortened form of a word or phrase

A mixture of refrigerants having a fixed boiling point is called: रेफ्रिजरेन्ट का एक ऐसा मिश्रण जिसका क्वथनांक स्थिर होता है ............. कहलाता है–

एक कक्षा में 50 छात्र हैं। 20 छात्रों के औसत अंक 70 हैं और शेष 30 छात्रों के औसत अंक 80 हैं। पूरी कक्षा का औसत अंक ज्ञात करें।

Q: The price of a TV has been reduced by 20%. In order to restore the original price, the new price must be increased by:

A. 20%

B. 28%

C. 31%

D. 25%

Correct Answer: Option D -

Explanations:

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