O_er_t_o_

Complete the missing letters of the given word.

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

What jumps when it walks and sits when it stands?