Questions

In a first, China is planning to send mini-ecosystems — containing potato seeds and silkworm eggs — to the Moon next year, in an attempt to study how the organisms develop on the lunar surface. The 3-kilogramme mini-ecosystem, developed by research teams led by Chongqing University in China, will be sent to the Moon by the Chang’e 4 scheduled to be launched in 2018, authorities announced at the Global Space Exploration Conference. An 18-centimetre-tall cylinder will carry potato seeds and silkworm eggs to be incubated.

Shankha Ghosh, the outstanding Bengali writer, commentator and academician, has been chosen for the prestigious 52nd version of the Jnanpith Award (2016) by the Government of India (GoI) for his lovely phrase and tries different things with different beautiful structures check his significance as an imaginative ability.The Jnanpith Award is presented every year to a literary figure for their outstanding contribution in literature. The honor conveys a reference, prize cash of Rs. 12 lakh and a bronze imitation of Goddess Saraswati.He turned into the sixth Bengali creator to win India's most astounding artistic honor after Mahasweta Devi, Tarashankar Bandopadhyay, Ashapurna Devi, Subhash Mukhopadhyay and Bishnu Dey.

Let the two digits be x & y

From given data in the question, we get

x + y = 3(x - y)

x + y = 3x - 3y

=> 2x = 4y

x/y = 2/1

For having the 2:1, numbers satisfying are

12, 21, 24, 42, 36, 63, 48, 84

From this 36 is eleminated because it is a perfect square and no others are prime or perfect squares.

Hence, there exists 7 such 2-digit numbers => 12, 21, 24, 42, 63, 48, 84.

When traveling in a vacuum, electronic waves from the electromagnetic spectrum all travel at the same speed. Velocity is speed with direction, so they would all travel at the same velocity, realtively speaking. But frequency and wavelength are quite different.