Questions

Let the integer be x. Then,

 x2-20x = 156

(x + 6)(x - 26) = 0

x = 26

The integer is 26.

10C5 x 28C1 x 10C6 = 7266

The world’s largest tropical rainforest Amazon rain forests are called "Lungs of the Earth". It is so called because it produces 20% of the Earth's oxygen, and is also a vast carbon sink, absorbs more than 1 billion tons of atmospheric carbon which is emitted by the burning of fossil fuels annually.

TRUE. The computers and electronic devices use digitized information which is easily understood by them.

Digitization is the process of converting analog signals or information of any form into a digital format that can be understood by computer systems or electronic devices. The term is used when converting information, like text, images or voices, and sounds, into binary code.

RAM storage capacity is measured in bytes, kilo bytes, mega bytes, giga bytes,...

Bats

A glove. It has 5 fingers as we have but not alive.