Can you find out which number multiplied by itself will give the output as 12345678987654321?

What does below Rebus mean ?

esgg sgeg gegs gsge

Which is faster, Heat or Cold ? Explain.

You need to move three matchsticks to form three squares. Can you do it?

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

By using 'because' continuously three times, can you make an English statement ?

There is a hypothetical state between the USA and Mexico border 'Tango'.
Here 70 percent of the population have defective eyesight, 75 percent are hard of hearing, 80 percent have Nose trouble and 85 percent suffer from allergies, what percentage (at a minimum) suffer from all four ailments?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M